Account assignment Mandatory for material (Enter acc.ass.cat)

Hi all,

Currently i would like to configure to have material with quantity update and no value update. so i create a new material type with reference to the material type -UNBW and i assign the material to this material type.

During the time i creating the PR with the material above, it not allow and forcing me to enter the account assignment category.

Kindly advise me what i have missing on this.

Thank you.

Kah Fei