How To Fix FKKEXC098 - At least one grouping key is already reversed

FKKEXC098 - Overview

• Message type: E = Error

• Message class: FKKEXC - Message Class for External Payments

• Message number: 098

• Message text: At least one grouping key is already reversed

Self-Explanatory Message

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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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FKKEXC098 - Details

• The SAP error message FKKEXC098 ("At least one grouping key is already reversed") typically occurs in the context of contract accounting or revenue accounting when there is an attempt to reverse a transaction that has already been reversed or when there is an inconsistency in the grouping keys used for the transaction.
  
  Cause:
  
  Reversal Attempt: The error usually arises when you try to reverse a transaction that has already been reversed. In SAP, each transaction has a unique grouping key, and if that key has already been processed in a reversal, attempting to reverse it again will trigger this error.
  Inconsistent Data: There may be inconsistencies in the data related to the grouping keys, such as missing or incorrect entries in the database that prevent the reversal from being processed correctly.
  
  
  Solution:
  
  Check Transaction History: Review the transaction history for the specific grouping key to confirm whether the transaction has already been reversed. You can