How To Fix OC831 - Begin of material assignment must be after & &

SAP Error Message - Details

• Message type: E = Error

• Message class: OC - IS-Oil: BDRP Bulk Distribution Requirement Planning messages

• Message number: 831

• Message text: Begin of material assignment must be after & &

What causes this issue?

The start of a material segment assignment must be after the last
material movement for that material segment.

System Response

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

How to fix this error?

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 OC831 - Begin of material assignment must be after & & ?

  The SAP error message OC831, "Begin of material assignment must be after & &," typically occurs in the context of material assignments in SAP, particularly when dealing with production orders, project systems, or similar modules where material assignments are crucial.
  Cause:
  This error usually arises when there is an attempt to assign a material to a production order or project that has a start date or time that is earlier than the defined start date of the material assignment. In other words, the system is enforcing a rule that the material assignment cannot begin before a certain date or time.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Dates: Review the start date of the material assignment and ensure that it is set correctly. The start date should be later than the date specified in the error message.
  
  
  Adjust Material Assignment: If the material assignment is incorrectly set, adjust the start date of the assignment to a date that is after the specified date in the error message.
  
  
  Review Production Order/Project Dates: Ensure that the production order or project dates are correctly defined and that they align with the material assignment dates.
  
  
  Consult Documentation: If you are unsure about the correct dates or how to adjust them, refer to the relevant SAP documentation or user manuals for guidance on material assignments.
  
  
  Check for Dependencies: Sometimes, other dependencies or configurations in the system may affect the dates. Ensure that there are no conflicting settings that could lead to this error.
  
  
  Contact Support: If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help you navigate to the material assignment screens, such as CO02 (Change Production Order) or CJ20N (Project Builder).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles and Permissions: Ensure that you have the necessary permissions to make changes to material assignments and production orders.
  
  By following these steps, you should be able to identify the cause of the OC831 error and implement a solution to resolve it.