The XSDs in fixmlschema_FIXLatest_EP305.zip downloaded today (July 9, 2026) do not self-validate because the zip is missing files (EP293 had 71 XSDs; EP305 currently has only 50.) I downloaded from Standards → Extension Packs → machine-readable specification link → FIX Latest FIXML Schema Download button.
@JHuff_CFTC.gov thanks for raising the issue. FIX Latest has now been updated to EP307 and the FIXML schemas should be complete again.