The request uses FDX-standard protocols and includes Accept, Authorization, and custom (x-apikey) headers.
https://{apiGatewayAddress}/fdx/v5/tax-forms/6215901221224448
Accept: application/json
The authorization header consists of a string of "{taxDocumentId}:{taxDocumentCode}" encoded using Base64 encoding.
Authorization: Basic {base-64-encoded-tax-document-id-colon-document-code}
x-apikey: {your-api-key}
Contact support@schedulek-1.com to set up an API service agreement and obtain an API key.