we tried to post transaction customer with special GL account and Revenue line item with document type DI which is Customer Invoice. The point is users can post it for every month until now they do month-end closing and post the transaction as normal they can do but system showed error message as shown below. Then I tried to deselect that item category to not require or tried to delete it from accounting transaction but system always add it in that accounting transaction. So far I do not know why they could do enter transaction before now and can not do it anymore with the usual process.:-
Please you help to advise me urgently...Thank you.
Item category 02000 is missing (obligatory in accounting transaction 0200/0001)
Message no. GLT2002
The online document splitting is active in your system. Here, each document is assigned to a accounting transaction variant and each document row to an item category.
You determine for each business transaction variant which item categories can or must be posted here.
The following error occurred for the document you entered:
Item category 02000 could not be derived from a document line item. This item category is however defined as obligatory in accounting transaction 0200, variant 0001.
The document cannot be posted.
Check the document entered, the derivation of the business transaction variant, the derivation of the item category, and the assignment of the item categories to the business transaction variant.