How To Fix CKMLMV304 - Posting to a prior period: Actual BOM exists in the previous period

CKMLMV304 - Overview

• Message type: E = Error

• Message class: CKMLMV - Message class for quantity structure tool

• Message number: 304

• Message text: Posting to a prior period: Actual BOM exists in the previous period

What causes this issue?

You are trying to display the actual BOM for a line that represents a
posting in the previous period.

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?

Display the material ledger daten for the previous period and choose
the actual BOM again.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

CKMLMV304 - Details

• The SAP error message CKMLMV304, which states "Posting to a prior period: Actual BOM exists in the previous period," typically occurs in the context of Material Ledger and Costing when you attempt to post a transaction that affects a previous period where an actual Bill of Materials (BOM) is already defined. This can happen during month-end closing processes or when trying to adjust costs for prior periods.
  
  Cause:
  
  Actual BOM Exists: The error indicates that there is an actual BOM defined for the previous period, which means that the system has already recorded the costs based on that BOM.
  Period Closing: The period you are trying to post to has already been closed, and the system does not allow changes that would affect the closed period.
  Costing Variants: The costing variant used may not allow postings to prior periods if actual costs have been calculated based on the BOM.
  
  
  Solution:
  
  Check BOM Validity: Verify if the