Error in LM01 for GR-109, in case of partial GR-107 for a std PO.

Question

We are facing the issues in Doing the Goods receipt thru LM01 Transaction for movement type 109 in Specific cases as .
     We created a standard PO and done the Goods receipt process of movement type 107 for partial quantity, and then other Goods receipt process for Movement type -107 for rest of the quantity in PO.
     Say PO Qty is  100 EA.
     GR-107 Mvt type for 70 EA
     2nd GR-107 Mvt Type 30 EA
     Now when we are doing the Goods receipt of Movement Type-109 for qty more than 70 EA, it gives me the error message of PU Val. GR Blckd St. exceeded by same qty: Material No, Plant , Storage location and Valuation type.
     In the above case we were doing the Goods receipt of Movement type-109 for 71 EA, 1 EA more than the 1st GR (70 EA).  And the error message is PU Val. GR Blckd St. Exceeded by 1 EA:
If the qty is 75 EA it would give the error for 5 EA. And so on.
GR-109 is done thru LM00 or LM01 transaction. While GR-107 is thru MIGO with mvt type-107.

Answer 1

The System allows for the receipt of 70 pcs thru LM01  and 109 movement, But once we start doing the GR for the next 30 pcs it gives the same error.
If done GR for 1 pcs thru RF transaction LM01, It gives the error that 1 pcs is extra and so on.
Tried to do the GR-109 thru MIGO ftransaction it allows to do that and no issues.
The error is appearing in case of partial entry of 107 only. it allows for the 1st qty and further gives error.