Our delivered alignment adapter has a different shoulder position and suffix from the accepted fixture drawing. Thirty-four days waiting for an equivalence comparison. Tooling unfitted. The seller has supplied reassurance, not the missing dimensions.
Ask for the identified supplied adapter drawing and have your fixture designer mark the seating conflict against the accepted revision; keep the complete assembly out of installation until that comparison is settled.
Supplied drawing received. Designer confirms the shoulder prevents the fixture plate seating. Seller proposes another spacer rather than the agreed adapter.