How To Fix REISCA021 - Field can be either header field or item field, but not both

SAP Error Message - Details

• Message type: E = Error

• Message class: REISCA - Information System: General Functions

• Message number: 021

• Message text: Field can be either header field or item field, but not both

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 REISCA021 - Field can be either header field or item field, but not both ?

  The SAP error message REISCA021 indicates that there is a conflict in the data entry where a field is being treated as both a header field and an item field simultaneously. This typically occurs in the context of document processing, such as in invoice or purchase order entries, where certain fields are expected to be filled out either at the header level (general information about the document) or at the item level (specific details about individual line items), but not both.
  Cause:
  
  Data Entry Error: The user may have inadvertently filled in a field that is meant for either the header or item level, leading to a conflict.
  Configuration Issues: There may be issues with the configuration of the document type or the field settings in the SAP system.
  Custom Development: If there are custom enhancements or modifications in the SAP system, they might be causing unexpected behavior in how fields are processed.
  
  Solution:
  
  Review Data Entry: Check the document you are trying to process and ensure that the fields are filled out correctly. Make sure that the conflicting field is only filled in at either the header or item level, not both.
  Consult Documentation: Refer to the SAP documentation or help files related to the specific transaction or document type you are working with to understand the expected field usage.
  Check Configuration: If you have access, review the configuration settings for the document type in the SAP system to ensure that fields are correctly defined as either header or item fields.
  Debugging: If the issue persists, consider debugging the transaction to identify where the conflict arises. This may require assistance from a technical consultant or SAP support.
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or SAP Help Desk for further assistance.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to document processing, such as MIRO (Invoice Verification), ME21N (Create Purchase Order), etc.
  Field Definitions: Understanding the definitions and purposes of the fields in question can help clarify why the error is occurring.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  
  By following these steps, you should be able to identify the cause of the REISCA021 error and implement a solution to resolve it.