How To Fix CO311 - Quantity change carried out in dependent components

SAP Error Message - Details

• Message type: E = Error

• Message class: CO - PPC order processing messages

• Message number: 311

• Message text: Quantity change carried out in dependent components

What causes this issue?

You have changed the quantity of a component to which dependent
components are assigned.

System Response

The system adjusts the quantities of subordinate assemblies or
subordinate components to be discontinued.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CO311 - Quantity change carried out in dependent components ?

  The SAP error message CO311 ("Quantity change carried out in dependent components") typically occurs in the context of production orders or process orders when there is a discrepancy in the quantities of components or materials that are linked to a parent order. This error indicates that a change in quantity has been made to a dependent component, which may not be consistent with the overall order or production plan.
  Cause:
  
  Quantity Mismatch: The quantity of a component has been changed, but the system has detected that this change is not aligned with the overall order quantity or the quantities of other dependent components.
  Bill of Material (BOM) Issues: The BOM may not be correctly defined, leading to inconsistencies in the quantities of components required for production.
  Routing Issues: The routing associated with the production order may not match the quantities defined in the BOM.
  Manual Adjustments: Manual changes to the order or components that do not follow the defined relationships in the system can trigger this error.
  
  Solution:
  
  Check BOM and Routing: Verify that the BOM and routing for the production order are correctly defined and that the quantities match the requirements of the production order.
  Adjust Component Quantities: If a change in the quantity of a component is necessary, ensure that all dependent components are adjusted accordingly to maintain consistency.
  Recheck Order Status: Ensure that the production order is in a status that allows for changes. If the order is already confirmed or completed, certain changes may not be allowed.
  Use Transaction Codes: Utilize transaction codes like CO02 (Change Production Order) to make necessary adjustments and ensure that all related components are updated.
  Consult Documentation: Review SAP documentation or help files for specific guidance on handling this error in your version of SAP.
  
  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 Roles and Authorizations: Ensure that the user has the necessary authorizations to make changes to production orders and components.
  Training and Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  By following these steps, you should be able to identify the cause of the CO311 error and implement a solution to resolve it.