Must be present unless the mode is "delete" or the operation is invoked at the instance level

Default is 'no action'; (e.g. general validation). If the mode is create, the operation cannot be invoked on a particular resource.

If this is nominated, then the resource is validated against this specific profile. If a profile is nominated, and the server cannot validate against the nominated profile, it SHALL return an error. The profile parameter is required for mode=profile, and may be present in other modes

Indicates that the referenced resource should be treated as the 'root' as the specified graph, validating all references for the resource to ensure they follow the rules. This parameter is not widely supported.

If this is nominated, then the resource is validated against this specific profile. If a profile is nominated, and the server cannot validate against the nominated profile, it SHALL return an error. The profile parameter is required for mode=profile, and may be present in other modes

Indicates an implementation context that applies to this validation. Influences which additionalBindings are relevant. NOTE: Expectations around subsumption testing, etc. are not yet defined and may be server-specific.

One or more language codes (W3C Language tags, with sub-tags). This has the same format as the HTTP accept header, and defaults to the value of the header

The jurisdiction is used for validating in some profiles where country specific bindings are defined. The default jurisdiction is at the discretion of the server. If you want to specify No jurisdiction, this is functionally equivalent to a jurisdiction of the 'the whole world', which is jurisdiction=uv

In some cases (e.g. when creating examples for implementation guides or when checking for potential interoperability issues with a new communication partner), it can be useful to know when data elements are present in an instance when those elements are not mustSupport in the profile(s) the instance is being validated against. Identifying situations where this occurs might drive a change to the profile or cause a designer to drop an element from the instance. In other cases, the presence of the element can be fine and the information message ignored.

The extension parameter controls how extensions are validated. It allows extensions from the specified domain (by matching the URL for the extension), and also has the special values 'any' and 'none'. It is up to the server to choose default settings for this parameter

Whether to validate the questionnaire in QuestionnaireResponse. Values: none - ignore, check - validate if a questionnaire is specified, and require - a questionnaire must be specified, and will be checked.

When the validator encounters a code that is not part of an extensible binding, add a warning to suggest that the code be reviewed. This turns the warning on or off. It's up to the server to decide what the default is.

Whether it's an error or just a warning when the validator encounters a coding or CodeableConcept where the display value isn't consistent with the display(s) defined by the code systems. It's up to the server to decide what the default is.

Whether it's an error or just a warning when the validator encounters a unknown CodeSystem. It's up to the server to decide what the default is.

The minimum level to report issues - e.g. ignore hints and warnings. By default, all issues are returned

The level to treat best-practice invariants etc as. By default these are treated as warnings

If this is true, additional bindings marked as 'current' will also be enforced

If this is true, additional validation regarding suitability for 'publishing' are also enforced. Note that HL7 defines a set of rules, but the meaning and use of 'publishing' is at the discretion of the server.

What to do when HTML is found in markdown fields. Values = ignore, warning, and error. It's server discretion what the default is, and servers may choose to ignore turning this off (for security consideration reasons)

Whether the existence of hidden bidi control characters is treated as a warning or an error. See CVE-2021-42574. Server discretion for the default value, and servers can ignore this setting.

Turns on verbose output, which servers may use to provide explanation of the validation process (e.g. slicing decisions).

Allow references in resources to refer to example.org, which are understood to be example URLs. Server discretion for the default value

If the operation outcome does not list any errors, and a mode was specified, then this is an indication that the operation would be expected to succeed (excepting for transactional integrity issues, see below)