How To Fix M8638 - Please choose a field

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 638

• Message text: Please choose a field

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message M8638 - Please choose a field ?

  The SAP error message M8638 ("Please choose a field") typically occurs in the context of material management or inventory management when the system expects the user to select a specific field or option but none has been selected. This can happen in various transactions, such as when trying to create or modify material documents, or during inventory adjustments.
  Cause:
  
  Field Selection: The user has not selected a required field in a dialog box or selection screen.
  Incomplete Input: The system requires certain mandatory fields to be filled out before proceeding, and the user has missed one or more of these fields.
  Configuration Issues: There may be issues with the configuration of the transaction or the screen layout that are causing the system to expect a selection that is not being made.
  
  Solution:
  
  Check Required Fields: Review the screen for any fields that are marked as mandatory (often indicated with an asterisk). Ensure that all required fields are filled out correctly.
  Select a Field: If the error occurs in a selection screen, make sure to select the appropriate field or option that the system is prompting for.
  Review Transaction Steps: Go through the steps of the transaction again to ensure that all necessary inputs are provided.
  Consult Documentation: If you are unsure which fields are required, consult the SAP documentation or help files related to the specific transaction you are using.
  User Training: If this error occurs frequently, consider providing additional training for users on how to properly complete the transaction.
  
  Related Information:
  
  Transaction Codes: The error can occur in various transaction codes related to material management, such as MB1A, MB1B, or MIGO.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. Sometimes, specific versions of SAP may have bugs that are documented in SAP Notes.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to perform the transaction, as sometimes lack of permissions can lead to unexpected behavior.
  
  If the problem persists after checking these areas, it may be beneficial to contact your SAP support team or consult with an SAP expert for further assistance.