How To Fix /ACCGO/MCK_MAINT749 - Special characters are not allowed.


SAP Error Message - Details

  • Message type: E = Error

  • Message class: /ACCGO/MCK_MAINT -

  • Message number: 749

  • Message text: Special characters are not allowed.

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  • Self-Explanatory Message

    Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

    To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

    Unfortunately, there isn't any extra information in this error notice.



    What else can you do?

    First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

    Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

    You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.


Smart SAP Assistant

  • What is the cause and solution for SAP error message /ACCGO/MCK_MAINT749 - Special characters are not allowed. ?

    The SAP error message /ACCGO/MCK_MAINT749 Special characters are not allowed typically occurs when you are trying to enter data into a field that does not accept special characters. This can happen in various contexts, such as when entering text in a form, a transaction, or a configuration setting.

    Cause:

    1. Input Validation: The field you are trying to fill may have restrictions on the type of characters that can be entered. Special characters (like @, #, $, %, &, etc.) are often not allowed in certain fields to maintain data integrity and consistency.
    2. Field Configuration: The field may be configured to accept only alphanumeric characters, and any attempt to include special characters will trigger this error.
    3. Data Source Issues: If the data is being imported from an external source, it may contain special characters that are not compatible with the SAP system.

    Solution:

    1. Check Input: Review the data you are trying to enter and ensure that it does not contain any special characters. Replace or remove any special characters before submitting the data.
    2. Field Documentation: Refer to the documentation or help text associated with the field to understand the allowed character set.
    3. Data Cleansing: If you are importing data, ensure that the data is cleansed to remove any special characters before it is processed in SAP.
    4. Configuration Review: If you have access, review the configuration of the field in the SAP system to understand its restrictions. If necessary, consult with your SAP administrator to see if the field can be modified to accept a broader range of characters.
    5. Error Handling: Implement error handling in your data entry or import processes to catch and correct these issues before they result in an error.

    Related Information:

    • SAP Notes: Check SAP Notes for any known issues or updates related to this error message. SAP frequently releases notes that address specific error messages and provide guidance on how to resolve them.
    • Transaction Codes: Familiarize yourself with the transaction codes related to the module you are working in, as they may provide additional context or tools for troubleshooting.
    • User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can provide insights or solutions.

    If the problem persists after trying the above solutions, it may be beneficial to contact your SAP support team for further assistance.

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