Error occurred while writing data to the product allocation group

Hello Experts,

While transferring data from Planning Area to Product Allocation Group (/SAPAPO/ATPQ_PAREA_R), following error is seen "Error occurred while writing data to the product allocation group".

I generated the objects via "/SAPAPO/ATPCQ_GENER - Generate Objects"; still the issue persist. Please help.

Regards

Rahul Chitte