Error guide & FAQ

Plain-language explanations of the messages the FHIR validator produces, grouped by category. The same explanations appear on each issue in your validation results.

Troubleshooting & FAQ

5 entries

Cardinality could not be fully checked Missing or repeated elements

What it means: The validator found matching entries but could not verify the min/max because the slicing rules are not machine-checkable.
Why: This is usually a profile limitation, not your mistake.
How to fix: Review the element manually against the profile page; no change is needed if it matches.

Validator message IDs: Validation_VAL_Profile_NoCheckMax Validation_VAL_Profile_NoCheckMin

Element required by a fixed value is missing Missing or repeated elements

What it means: The profile fixes the element to a specific value, but the element is absent.
Why: The profile requires an exact value so that consumers can identify this kind of data.
How to fix: Add the reported location with the exact value stated in the message.

Validator message IDs: Profile_VAL_MissingElement

Required element is missing Missing or repeated elements

What it means: The profile says the element must appear a minimum number of times, and your resource has fewer (often zero).
Why: NP Core marks this element as mandatory so every receiving system can rely on it being present.
How to fix: Add the element at the reported location. If the message mentions a slice, add an entry that matches that slice (for example an identifier with the right system). Check the profile page for the exact rule.

{ "identifier": [ { "system": "http://example.org/id", "value": "12345" } ] }

Validator message IDs: Validation_VAL_Profile_Minimum Validation_VAL_Profile_Minimum_SLICE Validation_VAL_Profile_Minimum_SLICE_EXT

Too many repetitions of an element Missing or repeated elements

What it means: the element appears more times than the profile allows.
Why: The profile limits how many values the element may have; receivers may reject or ignore extras.
How to fix: Remove the extra entries at the reported location, or merge them. If it is an array, keep only the allowed number.

Validator message IDs: Validation_VAL_Profile_Maximum

Value (or data-absent-reason) required Missing or repeated elements

What it means: The element has no value. FHIR needs either a value or a child extension explaining its absence.
Why: A bare empty element carries no information.
How to fix: Add the value, or add a data-absent-reason extension if the data is unknown.

Validator message IDs: PRIMITIVE_MUSTHAVEVALUE_MESSAGE PRIMITIVE_VALUE_ALTERNATIVES_MESSAGE Type_Specific_Checks_DT_Primitive_ValueExt