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SoapAction

IANA permanent request

Declared by 3 providers across 46 published specification files in the APIs.io network.

What this header is for, and how to use it →

A count here is providers whose published contract declares this header — not providers who send it. Response headers set at the edge rarely appear in an OpenAPI at all, so a low number can measure documentation practice rather than deployment.

The registry

Statuspermanent
ReferenceSimple Object Access Protocol (SOAP) 1.1

Providers declaring it (3)

adobe-campaign salesforce tui-group

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All headers Connection & Transport Guidance on headers.apievangelist.com