
Transaction key GBB in conjunction with the account grouping code (account modification) of the account assignment category is used to automatically determine the default account in purchasing documents. You can define further account assignment categories in Customizing for Purchasing and assign new account grouping codes to them.
In the case of items with account assignment in combination with a material master record, the system uses the valuation class from the accounting view of the material master. If the material master record does not contain a valuation class (for example, as is the case with material type NLAG), the system uses the ‘ ‘ (blank) valuation class.
In the case of items with account assignment without a material master record, the system uses the valuation class of the material group or the ‘ ‘ (blank) valuation class.
Default Accounts According to Material Groups

You can default an account for procurement without a material master depending on the material group.
The system uses the transaction/event key GBB, the account grouping code (account modification) of the account assignment category and the valuation class of the material group to determine the default account.
You can assign valuation classes to the material groups in Customizing for Purchasing under Entry Aid for Items Without Material Master. The system then determines the accounts by using these classes.
Hint
The standard does not support the parameter ID SAK for the G/L account. If you want to pre-assign the G/L account in purchasing documents, you can modify the field by activating the SET/GET parameter function for it.
While maintaining a G/L account master record, (transaction FS00), you can define an account assignment object default value (order or cost center) if necessary.



