How To Fix JIT00662 - Backflush and BOM explosion for material &1 are irrelevant

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 662

• Message text: Backflush and BOM explosion for material &1 are irrelevant

What causes this issue?

The <LB>Backflush</> and <LS>BOM Explosion</> fields are only relevant
for JIT materials.

System Response

The fields for this material are ignored.

How to fix this error?

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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 JIT00662 - Backflush and BOM explosion for material &1 are irrelevant ?

  The SAP error message JIT00662 indicates that there is an issue with the backflush and Bill of Materials (BOM) explosion for a specific material. This error typically arises in the context of Just-In-Time (JIT) production processes, where materials are managed closely to align with production schedules.
  Cause:
  The error message JIT00662 can occur due to several reasons:
  
  
  Material Master Data Issues: The material in question may not be set up correctly in the material master. This includes missing or incorrect BOM data, or the material not being marked for backflushing.
  
  
  BOM Configuration: The BOM for the material may not be valid or may not exist. If the BOM is not properly configured or if the components are not correctly defined, the system will not be able to perform the backflush.
  
  
  Production Order Status: The production order may not be in a status that allows backflushing. For example, if the order is already completed or closed, backflushing will not be possible.
  
  
  JIT Settings: The JIT settings for the material or the production process may not be configured correctly, leading to inconsistencies in how materials are handled.
  
  
  Solution:
  To resolve the JIT00662 error, you can take the following steps:
  
  
  Check Material Master: Verify that the material master data is complete and correct. Ensure that the material is set up for backflushing and that the relevant BOM is assigned.
  
  
  Review BOM: Check the BOM for the material to ensure it is valid and correctly configured. Make sure that all components are defined and that the BOM is active.
  
  
  Production Order Status: Check the status of the production order. If the order is not in a suitable status for backflushing, you may need to change the status or create a new order.
  
  
  JIT Configuration: Review the JIT configuration settings for the material and the production process. Ensure that all necessary settings are in place for backflushing to occur.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific details related to JIT processes and backflushing to ensure compliance with best practices.
  
  
  Testing: After making the necessary changes, test the backflush process again to confirm that the issue has been resolved.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CS01 (Create BOM), CS02 (Change BOM), and CO11N (Confirm Production Order) to manage BOMs and production orders effectively.
  SAP Notes: Check for any SAP Notes related to JIT and backflushing that may provide additional insights or patches for known issues.
  User Roles: Ensure that the user attempting the backflush has the necessary authorizations to perform the action.
  
  By following these steps, you should be able to identify and resolve the cause of the JIT00662 error in SAP.