---
type: "fhir-fhirpath-function"
title: "FHIR FHIRPath Function: %server.validate"
source: "source/fhirpath.html"
---

# FHIR FHIRPath Function: %server.validate

This page is part of **FHIR FHIRPath** (FHIR-specific extensions). Base spec lives at [FHIRPath](/fhirpath).

`%server.validate(resource, mode, parameters) : OperationOutcome`

Validate a resource on the server.

Parameters:

-   **resource**: The resource to validate.
-   **mode**: how to validate - see [Validation Operation](resource-operation-validate).
-   **parameters**: A parameters resource, or a string with URL parameters (name=value&etc.)

**Return Value:** An operation outcome with issues. If the validation couldn't be performed, the return value is empty.

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