How To Fix CO391 - No requisition exists for sub-operation & &

SAP Error Message - Details

• Message type: E = Error

• Message class: CO - PPC order processing messages

• Message number: 391

• Message text: No requisition exists for sub-operation & &

What causes this issue?

You want to display the purchase requisition of a sub-operation.
However, no purchase requisition exists for the sub-operation.

How to fix this error?

You need to change the control key of the sub-operation. Maintain a
control key which requires the sub-operation to be carried out
externally (On the detail screen of the control key, the indicator
'ExtProc' must be set to <ZH>External processing obligatory</>). If
this indicator is set, the system automatically creates a purchase
requisition for the sub-operation when the production order is saved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CO391 - No requisition exists for sub-operation & & ?

  The SAP error message CO391 ("No requisition exists for sub-operation & &") typically occurs in the context of production planning and control, particularly when dealing with production orders and their associated operations and components. This error indicates that the system cannot find a requisition (such as a purchase requisition or a stock transfer requisition) for a specific sub-operation in a production order.
  Causes:
  
  Missing Requisition: The most common cause is that there is no requisition created for the specified sub-operation in the production order.
  Incorrect Configuration: The configuration of the production order or the routing may not be set up correctly, leading to missing requisitions.
  Data Inconsistency: There may be inconsistencies in the master data, such as material master records or BOM (Bill of Materials) that prevent the system from generating the requisition.
  Incomplete Planning: The planning process may not have been completed, or the necessary planning runs have not been executed.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to view or create requisitions.
  
  Solutions:
  
  Check Production Order: Verify the production order to ensure that all operations and components are correctly defined. Check if the sub-operation in question is correctly linked to a component.
  Create Requisition Manually: If a requisition is indeed missing, you may need to create it manually. This can be done through transaction codes like ME51N (Create Purchase Requisition) or through the production order itself.
  Review Routing and BOM: Ensure that the routing and BOM for the material are correctly set up. Check if the components are assigned to the correct operations.
  Run MRP: If the requisition is supposed to be generated automatically, ensure that the Material Requirements Planning (MRP) run has been executed. This can be done using transaction MD01 or MD02.
  Check Authorizations: Ensure that the user has the necessary authorizations to create or view requisitions. This may involve checking user roles and permissions.
  Consult Documentation: Review SAP documentation or consult with your SAP support team for specific configurations related to your organization’s setup.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO01 (Create Production Order), CO02 (Change Production Order), and CO03 (Display Production Order).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Forums: Engage with SAP community forums or user groups for additional insights and solutions from other users who may have encountered the same issue.
  
  If the problem persists after trying the above solutions, it may be beneficial to involve your SAP support team or a consultant who can provide more in-depth analysis and troubleshooting.