We are experiencing a situation in IFS Apps 10 where multiple purchase requisition lines are being generated for the same part and supplier, rather than being grouped as expected.

In one example, we have four requisition lines that all share the same Wanted Delivery Date (12/11/2025) but have three different Wanted Receipt Dates. Our base expectation is that lines 1 and 2 (same dates) should be summarized into one requisition of quantity 40. Since the Wanted Delivery Date is what prints on the PO, we would ideally expect all four lines to be summarized into a single requisition of 80, in line with the Supply Chain Matrix logic.

Previously, these parts were set up with Planning Method G and Order Cover Time = 7, but that configuration created too much demand and led to overstocking. For reference, part 9302 has a safety stock of 69 (approximately one week).
We have also noticed similar behaviour for suppliers X and Y.

There are no obvious reasons for the requisition lines to be split, and we’d like to understand if anyone else has encountered this behaviour or can explain what setup or parameter could prevent these lines from grouping.