Hello,
Please refer SAP KBA, 2040378 - Fixed indicator in purchase requisition
which explain difference between Purchase requisition Fixed indicator and firming
the 'fixed' indicator is set after you have changed such a purchase requisition so that changes to the purchase requisition through materials planning are no longer possible.
If the Creation Indicator (ESTKZ) field is not 'B' (Material Requirements Planning), is not 'U' (Converted Planned order), and is not 'D' (Direct Procurement), the purchase requisition will be fixed automatically.
If the Processing status (STATU) field is ‘B’ (PO Created) and the Quantity Ordered (BSMNG) field is greater than “0”, the purchase requisition will be fixed automatically.
If the Processing Status (STATU) field is equal to 'A' (PO Created) and equal to 'L' (Created Scheduling Agreement), the purchase requisition will be fixed automatically.
If the indicator “firmed for requirements planning” (t161s-fixbp) is set on the customizing of the release indicator assigned to this purchase requisition, it is considered fixed.
If the Fixed indicator (FIXKZ) field is flagged, the purchase requisition will be fixed automatically.
If the Version (REVNO) field is not blank, the purchase requisition will be fixed automatically.
Best Regards,
R.Brahmankar