How To Fix RM331 - Yield and scrap cannot be posted at the same time

SAP Error Message - Details

• Message type: E = Error

• Message class: RM - Messages for Repetitive Manufacturing

• Message number: 331

• Message text: Yield and scrap cannot be posted at the same time

What causes this issue?

You are trying to post the yield and scrap quantities at a reporting
point at the same time. This is not possible.

System Response

No posting is carried out.

How to fix this error?

Backflush the yield and then the scrap quantity individually.

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 RM331 - Yield and scrap cannot be posted at the same time ?

  The SAP error message RM331, which states "Yield and scrap cannot be posted at the same time," typically occurs during the confirmation of production orders or when processing goods movements in the context of production and manufacturing. This error arises when the system detects that both yield and scrap quantities are being posted simultaneously for a production order, which is not allowed.
  Cause:
  
  Simultaneous Posting: The primary cause of this error is the attempt to post both yield (the amount of good product produced) and scrap (the amount of defective or unusable product) in a single transaction. SAP requires these to be handled separately to maintain accurate inventory and production records.
  Configuration Issues: There may be configuration settings in the production order or material master that are not set up correctly, leading to this error.
  User Input Error: The user may have inadvertently entered both yield and scrap quantities in the confirmation screen.
  
  Solution:
  
  Separate Posting: Ensure that yield and scrap are posted in separate transactions. First, confirm the yield quantity, and then, in a subsequent transaction, post the scrap quantity.
  Review Input: Double-check the input fields in the confirmation screen to ensure that only one of the two quantities (yield or scrap) is being entered at a time.
  Check Configuration: Review the configuration settings in the production order type and material master to ensure that they are set up correctly. This may involve checking the settings in the following areas:
  
  Production order type settings
  Material master settings related to production
  Customizing settings for yield and scrap handling
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on handling yield and scrap in your version of SAP.
  
  Related Information:
  
  Transaction Codes: The error may occur in transactions such as CO11N (Enter Production Order Confirmation) or CO15 (Goods Movement for Production Order).
  SAP Notes: Check for any relevant SAP Notes that may address this issue or provide additional guidance.
  User Training: Ensure that users involved in production confirmations are trained on the correct procedures for posting yield and scrap to avoid this error in the future.
  System Logs: Review system logs for additional context or related errors that may provide further insight into the issue.
  
  By following these steps, you should be able to resolve the RM331 error and ensure proper handling of yield and scrap postings in your SAP system.