# text.div
This code system http://hl7.org/fhir/constraint-severity defines the following codes:

Code | Display | Definition
error | Error | If the constraint is violated, the resource is not conformant.
warning | Warning | If the constraint is violated, the resource is conformant, but it is not necessarily following best practice.

# description
SHALL applications comply with this constraint?

# concept[].definition
If the constraint is violated, the resource is not conformant.

# concept[].definition
If the constraint is violated, the resource is conformant, but it is not necessarily following best practice.