I am facing a strange behavior in MD04, where the requirement list is getting disappeared for a sales order.
The scenario is -
There are 2 sales orders created for a same material. When the schedule line date for the line item of the 1st sales order is getting changed there is no loss of requirement list from MD04 whereas for the 2nd Sales order, when the schedule line date for its line item is changed then the requirement list is getting disappeared from MD04.
As per the user this is happening for one Sales order in production and none others.
IN such a case we are executing the program SDRQCR21 to recover the sales requirements.
This program is executed for temporary use and not a permanent solution.
So can you please help why the requirement list gets disappeared for just one sales order.
Also I have observed that when this issue happens the SD document category changes from C (Order) to K (Credit Memo Request).
Kindly provide your valuable inputs.