How To Fix JIT00579 - Material &3 occurs several times in components group &1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 579

• Message text: Material &3 occurs several times in components group &1

What causes this issue?

In IDoc, material &v3& has been specified for compenents group &v1&
more than once.

System Response

The system does not allow any further processing.

How to fix this error?

If this error often occurs, you can aggregate items with the same
material in the EDI Inbox.

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 JIT00579 - Material &3 occurs several times in components group &1 ?

  The SAP error message JIT00579 indicates that a specific material (denoted as &3) occurs multiple times in a components group (denoted as &1) during the Just-In-Time (JIT) delivery process. This error typically arises in scenarios where the system expects each component in a JIT delivery to be unique, but finds duplicates instead.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that the same material has been entered multiple times in the components list for a JIT delivery.
  Configuration Issues: There may be issues with how the JIT delivery is configured, leading to the same material being assigned to the same group more than once.
  Data Entry Errors: Manual data entry errors can lead to the same material being mistakenly added multiple times.
  
  Solution:
  
  Check Components List: Review the components list for the JIT delivery and ensure that each material is listed only once. Remove any duplicates.
  Adjust Configuration: If the issue is related to configuration, check the JIT settings in the system to ensure that they are set up correctly to prevent duplicate entries.
  Data Validation: Implement validation checks during data entry to prevent users from adding the same material multiple times.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on managing JIT deliveries and components.
  
  Related Information:
  
  JIT Delivery Process: Understand the JIT delivery process in SAP, which is designed to minimize inventory levels and ensure that materials arrive just in time for production.
  Material Master Data: Ensure that the material master data is correctly maintained and that there are no discrepancies that could lead to duplicate entries.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with relevant transaction codes (e.g., JIT-related transactions) that can help you manage and troubleshoot JIT deliveries.
  
  By addressing the root cause of the duplicate entries and ensuring proper configuration and data management, you can resolve the JIT00579 error effectively.