Applicant Versions & WSDLs

Applicant S2S Version Table

The only supported System to System (S2S) versions is:

  • V2.0 - Deployed with Release 12.0 in August 2012

NOTE: S2S V0 and V1 endpoints were discontinued January 4, 2016. Please use or upgrade to the S2S V2.0 endpoint.

The tables below lists the web services that are supported in the Applicant System to System (S2S) V2.0 web services library.

Feature Web Service Name
Get Application Info GetApplicationInfo
Get Application List GetApplicationList
Get Application Status GetApplicationStatusDetail
Get Application Zip GetApplicationZip
Get Opportunities GetOpportunities
Get Opportunities Expanded GetOpportunitiesExpanded
Get Opportunity Plus Comp Title GetOpportunityPlusCompTitle
Submit Application SubmitApplication

The following Applicant S2S V2.0 web services are only used for NIH ASSIST.

Feature Web Service Name
Authenticate AOR AuthenticateAOR
Submit Application As Third Party SubmitApplicationAsThirdParty
Get Application List As Third Party GetApplicationListAsThirdParty
Get Application Info As Third Party GetApplicationInfoAsThirdParty

Web services versions have no impact on the form versions used. Any version of the forms can be submitted and retrieved by S2S V2.0.



Version 2.0 (V2.0)

V2.0 is the latest library of web services. It uses Message Transmission Optimization Mechanism (MTOM) to support streaming of large submissions.

The endpoint and WSDL information for the Applicant Web Service Library V2.0 is provided below:
Training Environment Endpoint:
Production Environment Endpoint:
WSDL: ApplicantWebServices-V2.0.wsdl


Other S2S Resources

The following is the URL for the Grant Application Meta Data in

Training Environment:

Production Environment: