Diagnosis
You wanted to change the valuation class. However, this is not possiblebecause one or more of the following already exist for the material:

• Valuated stocks in the
current period or in the previous period

• Open purchase orders or
delivery schedule lines

• Production orders for
which a goods movement has already taken place

System Response
Your change is reset by the system.

Procedure


• If valuated stocks already exist, you can change the valuation class
only as follows:
Post the stocks of the material to an interim account.
Change the valuation class in the material master record.
Post the stocks of the material back to their original account.

• If open purchase orders already exist, you can only change the
valuation class if you first flag the corresponding purchase orderitems for deletion.

• If production orders exist for which a goods movement has already taken
place, you can only change the valuation class if you first set thestatus of the production orders to Deleted.

Procedure for System Administration
In Customizing for the Material Master, you can switch the checkfor open purchase orders and/or for production orders to a warning. Youdo this in Define Attributes of SystemMessages by assigning the message type Warning to message MM326 and/or MM 327 respectively. However, first ensure organizationallythat further processing of the open purchase orders or productionorders cannot result in inconsistencies.