InternalOptionalcarrier_Carrier services that apply to multiple carriers, but may be ignored by some carriers
Optionalcarrier_Permission for the carrier to release a package without signature
Optionalcarrier_Carrier services that apply to a specific carrier
Optionalrequire_A request that a package must be signed for
A request for an extra service.
This maps to an input with a GraphQL @oneOf directive.
This means you have to specify exactly one of the keys:
carrier_release:CarrierReleaserequire_signature:SignatureMailcarrier_dependent:CarrierDependentExtraServicecarrier_specific:CarrierSpecificExtraService