Volume and weight are not maintained for article &1 &2

&CAUSE& &V3&
These data are obligatory for the creation of the data medium exchange.

System Response

Some fields are not filled in the DME file.

How to fix this error?

Please maintain at least one of the following master data attributes:
- Volume of the REA-Article
- Volume of the material
- Weight of the material.

Error message extract from SAP system. Copyright SAP SE.