Cancel GR on purchase order before inspection

Hello,

I face the following issue:

1) A reception was done on a purchase order, at the time a material was supposed to be receipt in quality stock.

Result -> 100 ST in stock Q

2) For the same material, an inspection type was added in QA08 for this same material, ticking the checkbox "activate despite inspection stock"

Result -> An inspection lot of standard inspection type "0800" was automatically generated, without any link to the purchase order

Now I would like to cancel the GR on purchase order but:

• I am not able to cancel goods receipt because of message QA495 "Change inspection stock in QM only".
• I am not able to cancel the inspection lot because this option is not possible in QA02.
• I am not able to deactivate the inspection category from the material because there is an inspection lot existing.

Can anybody propose a way out of this?

Thank you!