How To Fix ME018 - Item category & can only be used with material

ME018 - Overview

• 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.

ME018 - Details

• The SAP error message ME018 ("Item category & can only be used with material") typically occurs in the context of purchasing documents, such as purchase orders or purchase requisitions. This error indicates that the item category you are trying to use is not compatible with the type of material or item you are attempting to create or process.
  
  Cause:
  
  Incorrect Item Category: The item category you are using is not suitable for the material type you are trying to include in the purchasing document. For example, certain item categories are only meant for stock materials, while others may be for non-stock materials or services.
  Material Master Configuration: The material master record may not be set up correctly. For instance, the material type may not be compatible with the item category.
  Document Type Restrictions: The document type you are using may have restrictions on which item categories can be used.
  Missing Material Master Data: The material