How To Fix 1P157 - Transaction type '&1': +/- sign does not concur with legacy system

SAP Error Message - Details

• Message type: E = Error

• Message class: 1P - BCA: Payment Transactions

• Message number: 157

• Message text: Transaction type '&1': +/- sign does not concur with legacy system

What causes this issue?

You can file for the transaction type whether an incoming or outgoing
payment is involved. The value filed here does not concur with the
legacy system data.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Either change the +/- sign for the transaction type or change the
assignment to the BCA transaction types in the legacy system.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 1P157 - Transaction type '&1': +/- sign does not concur with legacy system ?

  The SAP error message 1P157 indicates that there is a discrepancy between the sign of a transaction type and the expected sign as per the legacy system. This typically occurs during data migration or integration processes where data from a legacy system is being imported into SAP.
  Cause:
  The error arises when the sign of a transaction (either a debit or credit) does not match the expected sign defined in the legacy system. For example, if the legacy system indicates that a certain transaction should be a debit (negative sign) but the data being imported shows it as a credit (positive sign), this inconsistency triggers the error.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the Data: Check the data being imported for the specific transaction type. Ensure that the signs (debit/credit) are correctly assigned according to the legacy system's definitions.
  
  
  Mapping Configuration: If you are using a data migration tool or middleware, review the mapping configuration to ensure that the transaction types are correctly mapped and that the signs are consistent with the legacy system.
  
  
  Adjust Transaction Types: If necessary, adjust the transaction types in the source data to ensure that they match the expected signs in SAP.
  
  
  Consult Documentation: Refer to the documentation of the legacy system to understand how transaction types and their signs are defined. This will help in aligning the data correctly.
  
  
  Testing: After making adjustments, perform a test import to verify that the error has been resolved.
  
  
  Consult SAP Support: If the issue persists, consider reaching out to SAP support for further assistance, especially if this is part of a larger migration project.
  
  
  Related Information:
  
  Transaction Types: In SAP, transaction types are used to categorize financial transactions. Each type may have specific rules regarding how they should be processed, including the expected sign.
  Data Migration: When migrating data from a legacy system to SAP, it is crucial to ensure that all data formats, including signs, are compatible.
  Error Logs: Check the error logs in SAP for additional details that may provide more context about the error.
  
  By following these steps, you should be able to identify and correct the issue causing the error message 1P157.