Error : Change the inspection stock of material in QM only

Dear experts,

                        I am trying to cancel the GR document done with reference to purchase order, inspection type 01, UD already completed for the inspection lot and stock posting is also done from QI to Unrestricted usage. We are using the customized program for reversing the stock from unrestricted to QI. We have also reversed the stock from Unrestricted to QI stock.

When cancelling the GR document in MIGO, I am receiving the error,

  "Change the Inspection stock in QM only"

Error Message : QA495

  I have attached the Detailed error description and the Inspection lot status in the attachment

Please provide the solution

J.Balakrishnan