Item category & can only be used with material
Message type: E = Error
Message class: ME - Purchasing: General Messages
Message number: 018
Message text: Item category & can only be used with material
What causes this issue?
The <GL:item_category>item category</> you entered requires the entry
of a <GL:material number>material number</>.
How to fix this error?
Enter a valid material number.
Error message extract from SAP system. Copyright SAP SE.