Material not maintained by accounting department

What causes this issue?

You selected an optimizing lot-sizing procedure for this material. For
an optimizing lot-sizing procedure, the accounting data must be
maintained in the material master record.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Maintain the accounting view in the material master record and enter a
price for the material.

Error message extract from SAP system. Copyright SAP SE.