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

OC831 - Overview

• 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.

OC831 - Details

• 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