How to remove association of serial number after Released

Summary:

Hello

we are working on WO Definition with Serial Tracking , meaning on the begining of the process of the manufacturing before the Released we need associate a serial numbers.

when I open Rework and associate a serial number and do Released even though before any operation I can't remove the association and to select other serial instead.(while the status is Unreleased then can do remove of the serial and to select something else)

Please assist what the ways to do reassembly after do released and insert the material to the WO.
BR

Sassi

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