How To Fix JIT00436 - Error in backflush: multiple entries in JITBACKFTMP

SAP Error Message - Details

• Message type: E = Error

• Message class: JIT00 - JIT: Messages for JIT Process

• Message number: 436

• Message text: Error in backflush: multiple entries in JITBACKFTMP

What causes this issue?

During backflush the system tried to write an entry in the table
<AB>JITBACKFTMP</>. However, an entry for the time given (exact to the
second) already exists.

System Response

The system has tried to save the entry ten times and terminates without
an entry in the reprocessing list (transaction <LS>JITB</>).

How to fix this error?

In transaction <LS>JITB</>, look for possible entries that could block
the backflush and try to carry out the backflush again later.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message JIT00436 - Error in backflush: multiple entries in JITBACKFTMP ?

  The SAP error message JIT00436, which indicates "Error in backflush: multiple entries in JITBACKFTMP," typically occurs during the backflush process in Just-In-Time (JIT) production scenarios. This error suggests that there are multiple entries in the temporary table JITBACKFTMP, which is used to hold data during the backflush operation. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Duplicate Entries: The primary cause of this error is the presence of duplicate entries in the JITBACKFTMP table. This can happen if the backflush process is triggered multiple times for the same production order or if there are issues with the data being processed.
  Concurrency Issues: If multiple users or processes are trying to backflush the same order simultaneously, it can lead to conflicts and duplicate entries.
  Data Integrity Issues: There may be underlying data integrity issues in the production order or the components being backflushed.
  
  Solutions:
  
  
  Check for Duplicates: 
  
  Use transaction codes like SE16 or SE11 to view the contents of the JITBACKFTMP table. Look for duplicate entries related to the same production order or component.
  If duplicates are found, they may need to be manually deleted or corrected.
  
  
  
  Clear Temporary Table: 
  
  If the entries in JITBACKFTMP are not needed, you can clear the table. However, this should be done with caution and ideally in a test environment first.
  You can use a program or transaction to clear the temporary table, but ensure that no active backflush processes are running.
  
  
  
  Review Backflush Process: 
  
  Ensure that the backflush process is not being triggered multiple times for the same order. Review the configuration and any custom logic that may be causing this.
  Check for any batch jobs or automated processes that might be executing the backflush concurrently.
  
  
  
  Check for System Updates: 
  
  Ensure that your SAP system is up to date with the latest patches and updates, as this may resolve known issues related to the backflush process.
  
  
  
  Consult SAP Notes: 
  
  Search for relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide solutions or workarounds for known issues.
  
  
  
  Contact SAP Support: 
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error and the steps you have already taken.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like MB1A, MB1B, and MB1C for inventory movements, as they may be relevant to the backflush process.
  JIT Configuration: Review the configuration settings for JIT in your SAP system to ensure they are set up correctly.
  User Authorizations: Ensure that users have the appropriate authorizations to perform backflush operations, as insufficient permissions can sometimes lead to unexpected behavior.
  
  By following these steps, you should be able to diagnose and resolve the JIT00436 error effectively.