Known issues

If your issue is not listed below, please contact us at or (for customers) our premium support desk.

Updated for version 24.3






On package creation duplicate files can
be introduced. For now: Make sure your
project does not use the same filename
(without the extension) twice. We
are working to warn you about this in the
proces. (SIM-960)

Workaround in place


Validation against FHIR version 3.0.2
gives eld-16 warning 2009 and error 1012.
This is due to an error in FHIR. The errors
should not prevent the rest of the
validation of the resource. The
underlying issue has been acknowledged
and should be resolved in a possible FHIR version
3.0.3. Simplifier will silence these
errors and warnings for you.

All our tooling is built on top of the official Firely .NET SDK developed and managed by Firely. The SDK is open source and maintained on Github and issues are publicly tracked there.

HL7 is maintaining a known issue list for the FHIR specifications on their Confluence.