How To Fix JIT00842 - Production number &1, CG type &2 has already been matched

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 842

• Message text: Production number &1, CG type &2 has already been matched

What causes this issue?

The components group with the external call number (production number)
&v1& and components group type &v2& (internal components group number
&v3&) has already been matched.

System Response

It is not permitted to match this components group again. Therefore the
components of this components group are not inclueded in the match.

How to fix this error?

If you still want to include the components group in the match, you
have to withdraw the match, which you have already carried out for this
components group.

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 JIT00842 - Production number &1, CG type &2 has already been matched ?

  The SAP error message JIT00842 indicates that a production number and a corresponding control group (CG type) have already been matched in the system. This typically occurs in the context of Just-In-Time (JIT) production processes, where specific production numbers are linked to control groups for tracking and management purposes.
  Cause:
  
  Duplicate Matching: The primary cause of this error is an attempt to match a production number that has already been matched to a control group. This can happen if the same production number is processed multiple times or if there is an attempt to reprocess a transaction that has already been completed.
  Data Entry Errors: Manual data entry errors or incorrect transaction processing can lead to this situation.
  System Configuration Issues: In some cases, configuration settings in the JIT process may lead to unexpected behavior, causing the system to incorrectly identify a match.
  
  Solution:
  
  Check Existing Matches: Verify the existing matches for the production number and control group in the system. You can do this by checking the relevant JIT documents or transaction logs to see if the production number is already linked to a control group.
  Avoid Duplicate Processing: Ensure that the production number is not being processed multiple times. If a match has already been made, you should not attempt to match it again.
  Correct Data Entry: If the error is due to incorrect data entry, correct the entries and try the transaction again.
  Consult Documentation: Review SAP documentation or help resources related to JIT processes to understand the specific requirements and constraints for matching production numbers and control groups.
  System Configuration Review: If the issue persists, it may be necessary to review the system configuration related to JIT processes. This may involve consulting with your SAP Basis or configuration team to ensure that the settings are correct.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP that pertain to JIT processing, such as JIT-related reports or transaction logs.
  SAP Notes: Check for any SAP Notes related to error JIT00842, as there may be patches or updates that address known issues.
  User Forums and Communities: Engage with SAP user communities or forums where similar issues may have been discussed, providing insights or solutions from other users' experiences.
  
  If the problem continues after following these steps, it may be beneficial to escalate the issue to your SAP support team for further investigation.