How To Fix 1K121 - Transaction type &1 and offsett. transaction type &2 have same +/- sign

1K121 - Overview

• Message type: E = Error

• Message class: 1K - BCA: Account Type

• Message number: 121

• Message text: Transaction type &1 and offsett. transaction type &2 have same +/- sign

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 1K121 - Transaction type &1 and offsett. transaction type &2 have same +/- sign ?

  The SAP error message 1K121 indicates that there is a conflict between two transaction types in the system. Specifically, it states that the transaction type &1 and the offsetting transaction type &2 have the same sign (either both are debit or both are credit). This situation can lead to inconsistencies in financial postings, as offsetting entries should typically have opposite signs.
  
  Cause:
  
  Configuration Issue: The transaction types may have been incorrectly configured in the system, leading to both being set up as either debit or credit.
  Posting Logic Error: The logic used in the posting process may not be correctly distinguishing between the two transaction types, causing them to be treated the same way.
  Custom Development: If there are custom developments or enhancements in the system, they may inadvertently cause this conflict.
  
  
  Solution:
  
  
  Check Configuration:
  
  Go to the configuration settings for transaction types in the SAP system (Transaction code: OBXT for transaction types).
  Verify the settings for both