Specify unit

Hi,

When I'm trying to post GR, I'm getting the following error. I have not maintained any of the unit of measure conversion factors. The material master BUM is KG and PO unit is also KG.

Specify at least 1 unit

Message no. BM018

Diagnosis

No unit was included. Conversion or determination of conversion factors is therefore not possible.

Kindly let me know why is this error triggering.

Regards

Ayyallas