How To Fix W_DSD_01024 - Some matl/store combs. already have main suppl. assignments in the future

W_DSD_01024 - Overview

• Message type: E = Error

• Message class: W_DSD_01 - Global message class for DSD

• Message number: 024

• Message text: Some matl/store combs. already have main suppl. assignments in the future

What causes this issue?

At least one of the material/store combinations that you have selected
for main vendor assignment already has another main vendor assignment
for another vendor in the future.

System Response

You cannot select these vendors as main vendors, since there must be
only one main vendor for each material/store combination at a specific
time. Material/store combinations without future main vendor assignments
will receive the missing main vendor assignments.

How to fix this error?

If you want to mark the problematic vendors as main vendors for the
material/store combinations, you must first remove the future main
vendor assignments for the other vendors.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W_DSD_01024 - Some matl/store combs. already have main suppl. assignments in the future ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W_DSD_01024: Some matl/store combs. already have main suppl. assignments in the future
  
  Meaning / 
  Cause:
  This warning message occurs in SAP's Vendor Evaluation or Source Determination processes, particularly when you try to assign a main supplier to a material/store combination (matl/store) for a future validity period, but there is already an existing main supplier assignment for the same material/store combination that overlaps or exists in the future.
  In other words, the system detects that for the same material and plant/storage location, a main supplier is already assigned for a future date range, and you are attempting to create another main supplier assignment that conflicts with this.
  
  When does it occur?
  
  When maintaining or changing source lists (transaction ME01, ME02, or via mass maintenance tools).
  When assigning or changing main supplier assignments for materials in specific plants or storage locations.
  When validity periods of supplier assignments overlap