In order for a master recipe to be selected for a process order, the recipe, as a rule, must have the status Released (depends on your chosen settings in Customizing).
In addition, the system only considers for selection recipes that match up with the data you have specified in your process order.
Manual or Automatic Selection
In the case of manual selection, the system selects all master recipes for this material which are valid on the transfer date. You can select the required master recipe from the list.
In the case of automatic selection, the system attempts to select a master recipe according to the specified criteria. If, however, the system cannot select a master recipe automatically, it will list all the master recipes available for your material. You can then select the required master recipe from this list.