How To Fix UCF9031 - Balance carryforward: Source document type &1 appears multiple times

SAP Error Message - Details

• Message type: E = Error

• Message class: UCF9 - Messages for Balance Carryforward

• Message number: 031

• Message text: Balance carryforward: Source document type &1 appears multiple times

What causes this issue?

In Customizing for the document type assignment for the balance
carryforward, you assigned multiple target document types to source
document type &V1&. This is incorrect: Each source document type must be
assigned exactly <ZH>one</> target document type.

System Response

Customizing settings for the document type assignment for the balance
carryforward are inconsistent and cannot be saved.

How to fix this error?

Correct the Customizing settings by assigning exactly <ZH>one</> target
document type to each source document type.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UCF9031 - Balance carryforward: Source document type &1 appears multiple times ?

  The SAP error message UCF9031, which states "Balance carryforward: Source document type &1 appears multiple times," typically occurs during the balance carryforward process in the SAP system. This error indicates that there are multiple entries for the same source document type in the system, which is causing a conflict during the carryforward process.
  Cause:
  
  Duplicate Entries: The primary cause of this error is the presence of duplicate entries for the specified source document type in the relevant tables. This can happen due to incorrect data entry, system errors, or issues during previous postings.
  Configuration Issues: There may be configuration settings in the financial accounting module that are not set up correctly, leading to multiple entries being recognized for the same document type.
  Data Integrity Issues: If there are inconsistencies in the data, such as missing or incorrect references, it can lead to this error.
  
  Solution:
  
  
  Identify Duplicates: Use transaction codes like SE16 or SE11 to check the relevant tables (e.g., BSIK, BSAK) for duplicate entries related to the source document type mentioned in the error message. You can run queries to find duplicates based on the document number and document type.
  
  
  Correct Data: Once duplicates are identified, you will need to correct the data. This may involve deleting or adjusting the duplicate entries to ensure that each document type is unique.
  
  
  Check Configuration: Review the configuration settings in the Financial Accounting module to ensure that they are set up correctly. This includes checking document types and their settings in transaction OBAY or OBA7.
  
  
  Run Balance Carryforward Again: After resolving the duplicates and ensuring the configuration is correct, attempt to run the balance carryforward process again.
  
  
  Consult Documentation: If the issue persists, consult SAP documentation or reach out to SAP support for further assistance. They may provide additional insights or patches if this is a known issue.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  OBY6: Balance carryforward settings
  OBAY: Document type configuration
  SE16/SE11: Data browser for checking table entries
  
  
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide specific fixes or workarounds.
  Testing: Always test changes in a development or quality assurance environment before applying them to production to avoid further issues.
  
  By following these steps, you should be able to resolve the UCF9031 error and successfully carry forward balances in your SAP system.