As soon as an applicant submitted the application finally, you can’t just delete it. But it can be withdrawn using the application ID.

HTTP-Method

POST

Path

/api/rest/v3/frontend/applications/{applicationId}/withdraw

Authentification

User Access Token

Path Parameter

applicationId

Query Parameter

-none-

Responses

Action	Response	Description
success	204	The application has been withdrawn successfuly
authorization error	401 / 403	See here and here for details.
error	400 – { “code”: “application_access_error”, “message”: “Application does not exist” }	No application was found for the provided ID or the applicant does not own it.
error	400 – { “code”: “application_access_error”, “message”: “Application was never submitted. Use delete instead.” }	The application has not been finalized yet and therefore can’t be withdrawn. You should use the delete endpoint instead.
error	400 – { “code”: “application_access_error”, “message”: “Was not able to withdraw the application” }

Example call with curla and user access token