How To Fix RM320 - Runtime cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: RM - Messages for Repetitive Manufacturing

• Message number: 320

• Message text: Runtime cannot be changed

What causes this issue?

You cannot change the runtime because, for example, an inspection lot
has already been created or because postings have already been carried
out in the current period.

System Response

A runtime change is not allowed.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RM320 - Runtime cannot be changed ?

  The SAP error message RM320 ("Runtime cannot be changed") typically occurs in the context of SAP's Material Management (MM) or Production Planning (PP) modules when there is an attempt to change the runtime of a process or operation that is not allowed due to certain conditions.
  Cause:
  
  Status of the Order: The error often arises when the production order or process order is in a status that does not allow changes. For example, if the order is already released, confirmed, or completed, the runtime cannot be modified.
  System Settings: Certain system settings or configurations may restrict changes to runtime for specific types of orders or operations.
  Dependencies: There may be dependencies or relationships with other operations or orders that prevent changes to the runtime.
  
  Solution:
  
  Check Order Status: Verify the status of the production or process order. If it is in a status that does not allow changes (e.g., completed or closed), you will need to revert the order to a status that allows changes, if possible.
  Review Configuration: Check the configuration settings in the SAP system related to the specific module (MM/PP) to see if there are restrictions on changing runtime. This may involve consulting with your SAP Basis or configuration team.
  Use Correct Transactions: Ensure that you are using the correct transaction codes for making changes. For example, if you are trying to change a production order, use transaction codes like CO02 (Change Production Order) instead of others that may not allow runtime changes.
  Consult Documentation: Refer to SAP documentation or notes related to the specific error message RM320 for any additional insights or updates that may apply to your version of SAP.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. They may provide specific patches or solutions based on your system's configuration.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can provide insights or solutions.
  Training and Documentation: Ensure that users involved in production planning and order management are trained on the correct procedures for modifying orders and understand the implications of changing runtime.
  
  By following these steps, you should be able to diagnose and resolve the RM320 error in your SAP environment.