How To Fix /ATL/CASHIR166 - Posting key for reversal against & is not found

SAP Error Message - Details

• Message type: E = Error

• Message class: /ATL/CASHIR -

• Message number: 166

• Message text: Posting key for reversal against & is not found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ATL/CASHIR166 - Posting key for reversal against & is not found ?

  The SAP error message /ATL/CASHIR166 Posting key for reversal against & is not found typically occurs in the context of financial transactions, particularly when dealing with cash management or accounting entries. This error indicates that the system is unable to find a valid posting key for reversing a transaction.
  Cause:
  
  Missing Posting Key Configuration: The posting key required for the reversal operation is not defined in the system. Posting keys are essential for determining how transactions are processed in SAP.
  Incorrect Transaction Type: The transaction type you are trying to reverse may not be supported for reversal, or it may require a different posting key.
  Custom Development: If there are custom developments or enhancements in the system, they may not have accounted for the necessary posting keys for reversals.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to perform the reversal, leading to this error.
  
  Solution:
  
  
  Check Posting Key Configuration:
  
  Go to the transaction code OB15 (or SPRO -> Financial Accounting -> General Ledger Accounting -> Document -> Document Entry -> Define Posting Keys).
  Verify if the posting key for the reversal is defined. If not, you may need to create or modify the posting key settings.
  
  
  
  Review Transaction Type:
  
  Ensure that the transaction type you are trying to reverse is valid and that the correct posting key is being used for the reversal.
  
  
  
  Consult with SAP Basis or Functional Team:
  
  If you suspect that the issue is related to custom developments or enhancements, consult with your SAP Basis or functional team to review the code and ensure that it handles posting keys correctly.
  
  
  
  Check User Authorizations:
  
  Ensure that the user attempting the reversal has the necessary authorizations to perform the action. You can check this in transaction SU53 after the error occurs.
  
  
  
  SAP Notes and Documentation:
  
  Check for any relevant SAP Notes that may address this specific error. You can search for notes related to cash management or posting keys in the SAP Support Portal.
  
  
  
  Related Information:
  
  Posting Keys: Posting keys are two-digit numbers that control the type of transaction being posted (e.g., debit or credit) and the account types that can be posted to.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FB08 (to reverse documents) and FBRA (to reverse a document with clearing).
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after checking the above points, it may be necessary to involve SAP support for further investigation.