Clear reservation at the production order confirmation
In the confirmation of the production order, does clear reversation - clear all the reservations of the BOM Components ?
What could be possible reason for non clearance of the reversation of the BOM components, when the header material is confirmed ?
is there any pre-requiste ?
When you tick "clear open reservation" check box at the time of confirmation, system deletes the reservation and that reservation does not interfere in the planning process but still it allows you to issue the material against that reservation number on MB1A. As per SAP this is how the system is designed. Even you can issue more then the reserved quantity by changing the quantity manually (System will only flash a warning in such a case). If you want the system to prohibit the issue more then the originally reserved quantity, you can convert that warning message to error.
I hope this will help in solving the issue.