How To Fix KOSA306 - Production process cannot be reselected

KOSA306 - Overview

• Message type: E = Error

• Message class: KOSA - Product Cost Collector

• Message number: 306

• Message text: Production process cannot be reselected

What causes this issue?

You have changed the characteristic values of the order. The order is
linked to a <DS:GLOS.3559911290FA5063E10000009B38F984>production
process</> through these characteristic values. The order is in turn
linked to a <DS:GLOS.3526B6F2AFAB52B9E10000009B38F974>product cost
collector</> through this production process.
You want the system to find a product cost collector that corresponds
to these (changed) characteristic values.

System Response

The system does not allow the product cost collector to be changed for
the following reasons:
Costs from the order have already been posted to the product cost
collector (based on the previous characteristic values).
No product cost collector that corresponds to the (new) characteristic
values can be found.

How to fix this error?

The costs for this order are still posted to the original product cost
collector.

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 KOSA306 - Production process cannot be reselected ?

  The SAP error message KOSA306, which states "Production process cannot be reselected," typically occurs in the context of production planning and control within the SAP system. This error indicates that the system is unable to reselect a production process for a particular production order or process order due to certain constraints or conditions.
  Causes of KOSA306
  
  
  Production Process Lock: The production process may be locked due to ongoing operations or other transactions that are currently using it.
  
  
  Incompatible Parameters: The parameters set for the production process may not be compatible with the current order or the material being processed.
  
  
  Missing Master Data: Required master data (like routing, work center, or production version) may be missing or incorrectly configured.
  
  
  Status of the Order: The production order may be in a status that does not allow for re-selection of the production process (e.g., if it is already released or completed).
  
  
  Capacity Constraints: There may be capacity constraints in