Hi Kamal
I slightly differ in opinion when you say:
"If you want to value stock only at standard cost select A
If you want stock can be valuated other than standard cost also select M"
The objective of valuating stock always at std cost can be achieved by selecting "w/o val' box.
Meaning of M and A is as below:
M- If you want to use valuated sales order stock and it should be valuated separately from anonymous warehouse stock. In this case the stock is kept in EBEW table.
A- If you want to use valuated sales order stock and it should be valuated together with anonymous warehouse stock. In this case stock is stored in normal MBEW table.
And this has a impact on MR21 also.
Kindly comment as it will help me also if my understanding is wrong.
Regards
Rajneesh Saxena