How To Fix 1K122 - Transaction type &1 and return trans. type &2 have differing +/- sign

1K122 - Overview

• Message type: E = Error

• Message class: 1K - BCA: Account Type

• Message number: 122

• Message text: Transaction type &1 and return trans. type &2 have differing +/- sign

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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Smart SAP Assistant

• What is the cause and solution for SAP error message 1K122 - Transaction type &1 and return trans. type &2 have differing +/- sign ?

  The SAP error message 1K122 indicates that there is a mismatch in the sign (positive or negative) between the transaction type and the return transaction type in a financial transaction. This typically occurs in the context of financial postings, where the system expects the return transaction type to have a sign that is opposite to the original transaction type.
  
  Cause:
  
  Transaction Type Configuration: The configuration for the transaction types in the system may not be set up correctly. Each transaction type should have a corresponding return transaction type that has the opposite sign.
  Posting Logic: The logic used in the posting process may be incorrectly defined, leading to a situation where the system cannot reconcile the signs of the transaction types.
  Data Entry Error: There may be an error in the data entry where the wrong transaction type or return transaction type is selected.
  
  
  Solution:
  
  
  Check Configuration:
  
  Go to the transaction code OBYC (for automatic postings) or