Frame component added in library using FOP method cannot used for frames.
Solution
Frame component parts required to have A closed profile sketch in synchronous or ordered or protrusion in ordered. Also need to have origin defined in sketch. If these conditions satisfies then the part can used for frames.
If parts are added to library using Family Part Master method, the populated parts will be added to library. These are having part copies and does not satisfy conditions for frame component parts. These parts can't use for frame creation.
Notes