ERROR-With non-valuated GR, please also enter GR indicator

Hi,

We are on SRM 5.0 SP12,Extended Classic scenario.

For all PO's which have no follow on docs created,whenever the

Confirmation-Related Invoice Verification (GR_BASEDIV) and Confirm

Performance of Service/Goods Receipt(GR_IND) fields are changed,the

changes are not transferred to ECC backend .The SRM PO status is set

to "ERROR IN PROCESS" and in RZ20 we see the folling messages:

PurchOrder 5000012063: Purchase order still contains faulty items

PO 5000012063: With non-valuated GR, please also enter GR indicat or

PO 5000012063: Instance 5000012063 of object type PurchaseOrder c ould

not be changed

Has anybody come across such an issue?