
Clear and concise error messages are crucial for a good user experience. A well-crafted error message should be brief and to the point.
Error messages should be specific and not generic. According to the article, generic error messages like "Error 404" are not helpful to users.
To make error messages more helpful, provide context about what went wrong. For example, an error message like "The username you entered is not valid" is more informative than a generic error message.
Clear and concise language is essential for error messages. Avoid using jargon or technical terms that users may not understand.
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Writing Error Messages
Writing error messages is all about connecting with users and providing a good experience for them, not bombarding them with technical jargon that they won’t understand.
Clear and concise language is key. Research shows that users understand 90% of messaging when sentences are 14 words or less, and 100% when they're 8 words or less.
Avoid using overly technical terms that might confuse users. For example, "GeneralNetworkUserError_502" means nothing to most people. Instead, write like you're a human, not a jargon robot.
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Write for Humans
Writing error messages that humans can understand is crucial. No one wants to get a message with a file name that's three lines long, filled with technical jargon that doesn't make sense.
UX microcopy is all about connecting with users and providing a good experience, not bombarding them with technical jargon. A study shows that shorter sentences result in greater understanding by users, with 90% understanding when sentences are 14 words or less.
Clear and concise language is key. A legitimate error text message will rarely have spelling or grammatical mistakes, which is a dead giveaway of a fake message. A good error message should be easy to read and understand, like this one from Spotify: "Your music has stopped playing. Check your internet connection and try again."
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Codes
Writing clear and concise error messages is crucial for effective communication, especially in digital systems. A well-crafted error message can help users understand what went wrong and how to fix it.
Error messages should be specific and informative, providing users with enough information to diagnose and resolve the issue. One way to achieve this is by using error codes, which can be easily understood by developers and users alike.
Error codes can be used to categorize and report errors, making it easier to identify and fix issues. However, not all error codes are created equal, and some can be more informative than others.
Let's take a look at some common error codes used in SMS messaging. These codes can help us understand why a message failed to deliver and what might have caused the issue.
Here are some common SMS message error codes:
Each of these error codes provides a specific reason why a message failed to deliver, giving users a clear understanding of what went wrong.
Designing Error Messages
Avoiding ambiguity in error messages is key to keeping users calm and in control. A vague error message can be frustrating, but a specific one can help users quickly address the issue.
You've probably seen error messages that are just a jumbled mess of codes and jargon. That's not helpful to anyone. Instead, provide a clear explanation of the error and how to fix it.
Slack is a great example of how to do this right. They use humor and clear language to make their error messages stand out.
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Avoid Oops and Whoops
Using a tone that's too casual or childish in your error messages can be a turn-off for users. It's generally not good business to talk to your users like they're children or baby internet users.
Some people might use phrases like "oops" or "whoops" in their error messages, but this can come across as condescending. What if your users aren't native English speakers? They might not understand the tone or the language used.
Twitch's error messaging is a good example of how to do it right - it's on brand, a little humorous, but not cutesy or annoying.
Format
Format errors can be frustrating for users. They often occur when the input data doesn't match the expected format.
One type of format error is the "400 (Invalid Number Format)" error, which indicates that the user has entered a number in an incorrect format.
Another type of format error is the "401 (Encoding Error)" error, which occurs when the user has entered a message with an incorrect encoding.
You've probably encountered the "402 (Empty Message)" error before, where you're prompted to enter a message, but the field is empty.
Here are some common format errors to look out for:
- 400 (Invalid Number Format)
- 401 (Encoding Error)
- 402 (Empty Message)
Understanding Error Messages
Text message errors can be frustrating, but they can also be helpful in identifying the issue that prevented the message from reaching the recipient.
A text message error will contain a code that specifies the problem, allowing you to investigate and resolve the issue. Unique error codes are usually maintained by various providers for various messaging issues.
To make error messages more user-friendly, keep the actions specific and logical. This means using clear and concise language, and providing the consequences of each action.
For example, instead of using "yes", "no", or "cancel" action buttons, consider adding an action word after it, such as "Yes, refresh the page" or "No, stay in the app." This makes it easier for users to understand what will happen if they choose a particular option.
It's also essential to avoid blaming the user for the error. Instead of saying "you did" or "you didn't", focus on providing specific directives on how to remedy the problematic action. For instance, if the email address is incorrect, say "Please enter a valid email address using the following format: [email protected]" rather than telling the user they entered it incorrectly.
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What Is?
A text message error occurs when a message fails to reach the recipient, triggering an error message with a code that identifies the issue.
This error code is crucial in understanding what went wrong and how to resolve the problem.
The code is usually specific to the provider and the type of messaging issue, but some are standardized and recognized globally.
Text message errors can be frustrating, but knowing how to read and understand the error code can save time and effort in troubleshooting.
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Identifying Fakes
Spelling or grammatical mistakes are a dead giveaway that a message is fake. If a message has errors in spelling or grammar, it's likely a scam.
Error texts that don't make any sense or don't provide any useful information may also be fake. This is a common tactic used by scammers to trick people into divulging sensitive information.
Typos and bad grammar are often used by scammers to make fake error messages seem more convincing. However, these mistakes can be a major red flag.
Scammers will often send fake error messages with the intention of obtaining personal or financial information.
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Don't Blame the User
Users are already frustrated when they get an error message, so don't make it worse by placing the blame on them.
You can avoid blaming the user by not using phrases like "you did" or "you didn't" when explaining what went wrong. Instead, keep directives specific to what the user needs to do to remedy the problematic action.
For example, if the email address they entered is incorrect, say "Please enter a valid email address using the following format: [email protected]" instead of telling the user "You entered your email incorrectly." This way, you're directing the user towards a solution rather than making them feel like they're in trouble.
This approach is demonstrated by HBOMax, which shows the correct format needed rather than telling the user they did it wrong.
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Error Message Content
Clear and specific error messages are a must-have for a good user experience. They should tell users why there was an error and how they can address the issue.
Avoid vague messaging like the example that says nothing helpful. It's frustrating for users and doesn't provide any solutions. Instead, be specific, like Slack's error message that tells users why there was an error and how to fix it.
A good error message should be easy to understand, even for users who are not tech-savvy. It should provide a clear explanation of the problem and a step-by-step guide on how to resolve it.
Inline Validation
Inline validation is a game-changer for user experience. It's about putting error messages right next to or above the field they belong to, making it easier for users to understand and address the issue.
This approach is especially helpful for users with screen readers, as it allows them to hear the error message and field label together.
Inline validation is becoming the standard across the internet and apps, and it's a much better experience for users.
Here are some common validation errors:
- 10 (Invalid Message)
- 40 (Invalid Source Number)
- 50 (Invalid Destination Number)
By using inline validation, you can avoid frustrating your users with long lists of error messages.
Validation
Validation is a crucial aspect of error message content. It's essential to provide clear and concise information to help users understand what went wrong and how to fix it.
A long list of error messages can be frustrating and difficult to understand, especially for users with screen readers. Inline validation, on the other hand, is a much better approach, as it puts the error message right next to or above the label it belongs with.
Here are some common validation errors and their corresponding error codes:
- Error Code 10: Invalid Message
- Error Code 40: Invalid Source Number
- Error Code 50: Invalid Destination Number
Each of these error codes has a specific cause and solution. For example, Error Code 10 occurs when the downstream carrier rejects the SMS text, while Error Code 40 means that the source number is invalid or not SMS-enabled.
To prevent these issues, make sure to follow proper SMS encoding flags or UDP protocols, and double-check phone numbers for typing errors. You can also try contacting your service provider to have your number re-verified.
In addition to providing clear error messages, it's essential to avoid ambiguity and vague messaging. Instead, tell users why there was an error and how they can address the issue.
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Error Message Scenarios
Some error messages are straightforward, while others require a bit more digging to resolve. Error code 30, for example, indicates a spam text and is one of the most common message errors.
Mobile carriers often have spam filters to determine whether incoming SMS messages contain spam content. When the carrier detects spam, it will drop the message and send an error text informing the sender.
Try checking for a whitelisted or anti-spam number to avoid this issue.
Other times, you might receive an error message that says the destination phone number is permanently unavailable. This can be frustrating, but there are steps you can take to troubleshoot the issue.
Error code 70 refers to the destination phone number being inactive or disabled with no sign of when it will be available again. It's a general error code that the carrier generates when it hasn’t pinpointed why the destination is unavailable.
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You can try checking whether you’ve entered the number correctly or sending a message to a different number to see if your application is actually working.
Remember, error messages can be frustrating, but they often contain clues to help you resolve the issue. By understanding the possible causes and taking the right steps, you can get back to sending and receiving texts in no time.
Specific and Logical User Actions
When crafting error messages, it's essential to keep user actions specific and logical. This means providing clear and concise options that allow users to easily resolve the issue.
The action buttons for error messages should be very clear to users, even if they don't read the whole message. This can be achieved by adding an action word after the button, such as "Yes, refresh the page" or "No, stay in the app."
It's also crucial to explain the consequences of each action within the error message itself. For instance, if a user decides to refresh the page, what will happen to their progress? Make sure everything is explained as simply and clearly as possible.
Trick buttons, like "yes", "no", or "cancel", can be misleading and frustrating for users. A better approach is to provide clear and specific actions, like the ones Instagram offers.
By following this approach, you can create error messages that are more user-friendly and less likely to cause frustration.
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Types of
Types of error messages can be frustrating, but understanding what they mean can help you troubleshoot the issue. SMS message errors are standardized, but the numerical designations and responses can vary with each provider.
Each SMS provider might have a different interpretation of error conditions based on their infrastructure. This means that even if you're familiar with one provider's error codes, you may not know what they mean on another platform.
Carrier errors are a type of SMS message error that can occur due to issues with the carrier's network or infrastructure. These errors can be frustrating, but knowing what they mean can help you resolve the issue.
Carrier errors include codes like 600 (Carrier Rejection), 601 (Content Blocked), and 602 (Carrier Network Issue). Here's a breakdown of these codes:
Delivery
Delivery errors can be frustrating, but understanding the reasons behind them can help you troubleshoot and resolve the issue.
Message Expired errors occur when the message stays in the queue long enough to reach its quota, resulting in an error code of 006 or 61.
Network errors are temporary issues often caused by the provider's side, and the error message might read "The message could not be delivered due to a temporary network error. Please try later."
If the destination number is temporarily unavailable, you'll receive a message error text with code number 80, indicating that the recipient's phone is likely powered off or not connected to a network.
Here are some common error codes related to delivery errors:
You can try checking whether you've entered the number correctly or sending a message to a different number to see if your application is actually working.
Spam Detected
Error code 30 is one of the most common message errors, indicating a spam text.
Mobile carriers often have spam filters to determine whether incoming SMS messages contain spam content.
These filters can drop the message and send an error text informing the sender.
Error code 30 is a clear indication that the message was flagged as spam by the carrier's filter.
Try checking for a whitelisted or anti-spam number to avoid this issue.
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Error Message Best Practices

Error messages should be clear and concise, with sentences 14 words or less for maximum understanding. This is backed by a study showing users understood 90% of messaging when sentences were 14 words or less.
Displaying error messages close to the error's source reduces cognitive load and helps users associate the error message content with the interface elements needing attention. This is a key aspect of visibility guidelines.
Error messages must contain copy to elaborate and assist the user with recovering from the error. Use human-readable language and avoid technical jargon, opting for language familiar to your users instead.
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Keep Language Simple
Using simple language in error messages is crucial for user understanding. A study by the American Press Institute found that sentences 14 words or less result in 90% user understanding, while sentences 8 words or less result in 100% understanding.
Clear and concise language is key. Avoid writing error messages that are too long or complicated. For example, a message like "Sure, it's a short message but does it tell users anything at all?" is not helpful.

Instead, aim for messages that are short and to the point. For instance, Spotify's error message "Sorry, something went wrong. Try again?" is clear and concise.
Error messages should also use human-readable language. Avoid technical jargon and use language that's familiar to your users. For example, the 404 page, which says "Not Found", is not the best example of this guideline.
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Compliance
Compliance is a crucial aspect of error messaging, and it's essential to get it right. A compliance error can occur when a sender's ID is not authorized, resulting in a 500 error.
Some common compliance errors include spam detection, which can trigger a 30 or 501 error. This is a serious issue, as it can lead to a sender's messages being blocked or filtered out.
Here are some specific error codes related to compliance:
- 30 (Spam Detected)
- 500 (Unauthorized Sender ID)
- 501 (Spam Detected)
- 502 (Opt-out Violation)
These error codes are clear indicators that something has gone wrong, and it's up to the sender to rectify the issue.
Visibility Guidelines
Error messages must be noticeable and recognizably presented to users. This means displaying them close to the error's source, reducing cognitive load by displaying an error indicator adjacent to the interface where the error occurred. Proximity helps users associate the error message content with the interface elements needing attention.
Text and highlights that are bold, high-contrast, and red are conventional error-message visuals. Use this styling for the message and for the affected elements needing correction. Another technique is leveraging carefully designed animations to guide the user's visual attention for corrections.
There are about 350 million people worldwide with a color-vision deficiency, so remember to follow accessibility guidelines. Never use exclusively color or animation to indicate errors.
Design errors based on their impact. Differentiate between "good to know" messages and those posing a barrier to the user's progress. Conditionally displayed labels, toast notifications, or banners can be used for issues needing minimal user interaction.
Timing is crucial when presenting error messages. Avoid displaying them too early, as it can make users feel annoyed, belittled, or confused.
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Mitigating Failure in Dire Situations
In dire situations where the system is completely down, it's essential to mitigate total failure with novelty. Errors can be unenjoyable for everyone involved, but sometimes they're unavoidable.
Errors like overloading servers can be catastrophic, forcing users to wait or try again later. This is where blending an apology with something surprising or novel can salvage the situation.
Users are likely to remember negative experiences due to the negativity bias and peak-end rule. The goal is to enhance memorability and sustain user interest with low-stakes experiences until the system resumes functioning.
Communicating humility and delight in such situations can be a challenge, especially if user input is in jeopardy or the context has severe implications for users.
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Error Message Guidance
Error messages should be designed to be noticeable and recognizable to users, with proximity to the error's source helping users associate the error message content with the interface elements needing attention.
Error messages should be concise, precise, and use human-readable language, avoiding technical jargon and obscure error codes or abbreviations. They should also offer constructive advice and take a positive tone, avoiding blame or humor.
Error messages should be designed based on their impact, with different levels of severity indicated by the design. This can include conditionally displayed labels, toast notifications, or banners for issues needing minimal user interaction, and modal dialogs for severe errors.
Communication Guidelines
Error messages should be written in human-readable language, avoiding technical jargon and using language familiar to your users. This means using plain language that's easy to understand, even for non-tech-savvy individuals.
Error messages can't rely solely on visuals; they must contain copy to elaborate and assist the user with recovering from the error. For example, the 404 page is a common error message that often violates this guideline.
Error messages should concisely and precisely describe the issue, providing context to help users understand what happened. Avoid generic messages like "An error occurred" – it's too vague.
To help users recover from errors, offer constructive advice. For instance, an "Out of stock" message for an ecommerce website could include details of when the product will be available again or suggest that users sign up for a restock notification by entering their emails.
Writing error messages with a positive tone is also crucial. Avoid blaming language, such as "invalid", "illegal", or "incorrect", which can shift the blame to the user. The system's creators are responsible for its proper usage, not the users.
Part 1: What Does It Mean?
An error message text is a broad term that can originate from various causes, including issues with your network, recipient device, or text formatting. It's a crucial aspect to understand for businesses that use SMS marketing.
Every error message text includes an error code that allows you to understand the cause of the failure and spot the right solution to resolve it. This error code can be a key to identifying what you need to do to ensure uninterrupted SMS campaigns.
A fake error message text copy and paste might be a fun prank idea for individuals, but for businesses, it's essential to instantly recognize what each error message means. This is not just a matter of technical troubleshooting, but it can also affect your business practices as a whole.
As a business, you lose profit and damage your company's reputation when your campaigns end up on the "message not sent, invalid destination" error among others. Addressing these errors efficiently is one of your top priorities.
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Here's a list of error codes and their possible causes:
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