I am getting quantityUnits not among allowed concepts error.
Openmrs Version :2.0.6 Build 453af9
Rest web service : 2.21
The allowed units are specified by a concept which in turn is specified via a global property. Look in your Advanced Settings / Global Properties for order.drugDispensingUnitsConceptUuid and similar settings.
Yea you are right. Was missing dosing units uuid in global properties