How To Fix AD_SUBCON254 - Serial numbers reassignment can not be completed during material exchange

SAP Error Message - Details

• Message type: E = Error

• Message class: AD_SUBCON - Messages for Subcontracting

• Message number: 254

• Message text: Serial numbers reassignment can not be completed during material exchange

What causes this issue?

During material exchange using transaction ADSUBCON, some serial numbers
are reassigned from higher purchase order item number to lower one.

System Response

The system does not allow you to perform such material exchange.

How to fix this error?

In transaction ADSUBCON, choose purchase order items for material
exchange where serial numbers are reassigned from lower purchase order
item number to higher one.
Reassign serial numbers manually in transaction ME22N:
At first remove serial numbers from the higher purchase order item
number<(>,<)>
Adjust quantities of the related purchase order items<(>,<)>
Finally assign serial numbers to the lower purchase order item number.

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.