How To Fix CPWB304 - Some selected material-routing assignments are not valid on key date

CPWB304 - Overview

• Message type: E = Error

• Message class: CPWB - General Workbench Messages

• Message number: 304

• Message text: Some selected material-routing assignments are not valid on key date

What causes this issue?

You have selected material-routing allocations that are not valid on
the key date.

System Response

The function is not executed.

How to fix this error?

Deselect the invalid material-routing allocation or change the key
date.

Error message extract from SAP system. Copyright SAP SE.

CPWB304 - Details

• The SAP error message CPWB304 indicates that some selected material-routing assignments are not valid on the specified key date. This typically occurs in the context of production planning and control, particularly when working with the Capacity Planning Workbench (CPWB) in SAP.
  
  Cause:
  
  Invalid Date Range: The routing or material assignment may not be valid for the key date you are using. This can happen if the routing has been changed or if the material has been deactivated or changed in the system.
  Routing Changes: The routing for the material may have been modified or deleted after the key date.
  Material Status: The material may have a status that prevents it from being used in production (e.g., blocked, discontinued).
  Master Data Issues: There may be inconsistencies or missing data in the master data for the material or routing.
  
  
  Solution:
  
  Check Validity of Routing: Verify the validity of the routing for the material on the key date. You can