GR for STO using Material Document in MIGO

Hi All

I read on some earlier forum links that it is possible to goods receipt a stock transport order using only the material document number as a reference.

A01     Goods Receipt

R02     Material Document

However, when I try to process the goods receipt I get an error message M7022.'SL Unrestricted-use exceeded by 8.000 EA <material> <plant> <sloc>

The material qty is showing in transit and I have completed the 351 issue out of our other plant. I wish to now GR the STO with reference to the material document, but cannot.

Any assistance would be greatly appreciated

Thanks in advance

Darren