I have a server template that has two documents, two recipients and two custom tabs placed on top of the first page of the first document.

My business requirements is to add a supplement document at the end of the documents provided by the server template. How do you accomplish that? I have literally tried every possible JSON combination. Here is my latest failed attempt:

{
    "emailSubject": "Electronic Signature Request",
    "emailBlurb": "Hi! an electronic signature request has been sent your way!",
    "status": "created",
    "compositeTemplates": [
        {
            "serverTemplates": [
                {
                    "sequence": "1",
                    "templateId": "hello-39ba-40a1-975d-world"
                }
            ],
            "inlineTemplates": [
                {
                    "sequence": "2",
                    "recipients": {
                        "signers": [
                            {
                                "email": "[email protected]",
                                "name": "Signer One",
                                "roleName": "Contact",
                                "tabs": {}
                            },
                            {
                                "email": "[email protected]",
                                "name": "Signer Two",
                                "roleName": "Signer 2",
                                "tabs": {}
                            },
                            {
                                "email": "[email protected]",
                                "name": "Amy Anderson",
                                "roleName": "Signer 3",
                                "recipientId": 3,
                                "tabs": {
                                    "textTabs": [
                                        {
                                            "tabLabel": "Doc Version",
                                            "value": "July FDD",
                                            "customTabId": "foo-foo-406d-814f-cc145e24634e"
                                        },
                                        {
                                            "tabLabel": "Recipient label",
                                            "value": "Anderson",
                                            "customTabId": "foo-foo-43c9-9759-28b1158dcb42"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        },
        {
            "document": {
                "documentId": 1,
                "name": "supplement-doc.pdf",
                "documentBase64": "JVBERi0..."
            }
        }
    ]
}

The error thrown is:

{
    "errorCode": "TAB_REFERS_TO_MISSING_DOCUMENT",
    "message": "The DocumentId specified in the tab element does not refer to a document in this envelope. Tab refers to DocumentId 66891084 which is not present."
}

If I remove the last “document” composite template item, the the error is:

{
    "errorCode": "INVALID_REQUEST_PARAMETER",
    "message": "The request contained at least one invalid parameter. 'recipientId' not set for recipient."
}

There are errors everywhere… After two days I am literally pulling out my hair…