I cannot choose Valuation class in MM01 since the field is blocked.
If I have only one Valuation class (the situation until now - 3100) assign to the Account Category Reference (0005) assign to the Material Type (HAWA), the system fills the field with 3100 by default.
But know, I created the Valuation class 3101 and, though both Valuation classes are in the drop down list of the field, I cannot choose neither of them and the field is not automatically filed.
Please, help me on this one.
I already read a lot posts related with valuation type and valuation split and I think it isn't the same situation.