Stream: implementers
Topic: invariants
Craig Newman (Feb 10 2017 at 14:51):
Is there a description somewhere of how to create invariants for a resource. The Invariants section of the FHIR Guide to Designing Resources (http://wiki.hl7.org/index.php?title=FHIR_Guide_to_Designing_Resources#Invariants) is a bit sparse. I've tried to create Invariants based on existing ones in other resources but I get build errors saying that I'm missing an expression but I can't tell exactly what is missing.
Lloyd McKenzie (Feb 10 2017 at 20:43):
You need to have a column called "Expression" that includes the FHIRPath expression of your invariant. The tooling now requires FHIRPath - xPath is going to be deprecated
Last updated: Apr 12 2022 at 19:14 UTC
