Hello
I believe you are using a functionality called resource classification.
In this scenario, you assign characteristics to the resource and a selection criteria on the master recipe.
The order cannot be released because the resource does not match the selection criteria from the master recipe.
Check the lonks below for more details:
Classification of the Resource - Production Planning - Process Industries (PP-PI) - SAP Library
System-Aided Resource Selection - Production Planning - Process Industries (PP-PI) - SAP Library
BR
Caetano