Goods receipt problem

While Good receipt I am having the following problem.

"There is no item category assigned to account 400000/INT1

Message no. GLT2076

Diagnosis

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:

No item category could be determined for account 400000 in chart of accounts INT1.

System Response

The document cannot be posted.

Procedure

Assign an item category to the account specified. "

Please suggest what to do now ?