How To Fix IW493 - Operation &1 with subcontracting: Reassignment not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: IW - Order Processing

• Message number: 493

• Message text: Operation &1 with subcontracting: Reassignment not possible

What causes this issue?

You want to reassign a material from one order operation to another.
This is not possible, however, because the operation &V1& is specified
as an externally processed operation with subcontracting. Since a
purchase requisition for the subcontracted work has already been
created, you cannot reassign this material to a different order
operation.

System Response

Since the material is assigned to an externally processed operation and
the subcontracting indicator is set, the material is not reassigned to a
different operation.

How to fix this error?

You can delete the material from the current operation and assign it to
a different operation.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IW493 - Operation &1 with subcontracting: Reassignment not possible ?

  The SAP error message IW493 ("Operation &1 with subcontracting: Reassignment not possible") typically occurs in the context of production orders or maintenance orders when there is an attempt to reassign an operation that is linked to subcontracting. This error indicates that the system does not allow the reassignment of the specified operation due to certain constraints.
  Causes:
  
  Subcontracting Operations: The operation in question is defined as a subcontracting operation, which means that it is linked to an external vendor for processing. Reassigning such operations is restricted.
  Order Status: The production or maintenance order may be in a status that does not allow changes, such as being released or completed.
  Dependencies: There may be dependencies or relationships with other operations or components that prevent reassignment.
  Configuration Settings: The system configuration may restrict the reassignment of subcontracting operations.
  
  Solutions:
  
  Check Operation Type: Verify if the operation is indeed a subcontracting operation. If it is, consider whether it is necessary