How To Fix GU644 - Field & is not allowed as an additional field

SAP Error Message - Details

• Message type: E = Error

• Message class: GU - FI-SL utilities

• Message number: 644

• Message text: Field & is not allowed as an additional 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message GU644 - Field & is not allowed as an additional field ?

  The SAP error message GU644 ("Field & is not allowed as an additional field") typically occurs when you are trying to add a field to a report or a data structure that is not permitted in the context you are working in. This can happen in various scenarios, such as when customizing reports, creating queries, or modifying data structures in SAP.
  Cause:
  
  Field Restrictions: The field you are trying to add may not be allowed in the specific context (e.g., it may not be part of the data source or may not be allowed in the report layout).
  Data Structure Limitations: The data structure you are working with may have predefined fields, and adding additional fields that are not part of the structure can trigger this error.
  Authorization Issues: Sometimes, the error can be related to user authorizations, where the user does not have the necessary permissions to modify the report or data structure.
  Technical Constraints: Certain fields may be restricted due to technical reasons, such as being non-aggregatable or not suitable for the report type.
  
  Solution:
  
  Check Field Compatibility: Verify that the field you are trying to add is compatible with the report or data structure. Ensure that it is part of the underlying data source.
  Use Allowed Fields: If the field is not allowed, consider using an alternative field that is permitted in the context you are working in.
  Modify Data Structure: If you have the necessary permissions, you may need to modify the data structure to include the field, but this should be done with caution and typically requires development access.
  Consult Documentation: Refer to SAP documentation or help resources to understand the limitations of the specific report or data structure you are working with.
  Check Authorizations: Ensure that you have the necessary authorizations to make changes. If not, contact your SAP administrator to request the required permissions.
  Debugging: If you have access to debugging tools, you can trace the execution to see where the error is being triggered and gather more context about the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message GU644.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  Transaction Codes: Familiarize yourself with relevant transaction codes (e.g., SE11 for data dictionary, SE80 for object navigator) that may help you investigate the data structure or report in question.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more in-depth assistance.