I have been looking at the Docusign API webpages and was wondering if the ‘pageNumber’ tag of any given ‘tabs’ child (e.g. signHereTabs, initialHereTabs, textTabs etc.) was mandatory?

If I have the following information to use with the Docusign API, will the ‘anchorString’ value ‘[POS_Xn]’ be searched for within the entire multipage document OR do I have to specify which page the value exists on (in my case page 4 of 7) by adding the ‘pageNumber’ tag within the ‘signHereTabs’ declaration?

To be clear, the value ‘[POS_Xn]’ (of the ‘anchorString’) is only present once in the document to sign.

{
    "emailSubject": "Please sign attached doc",
    "emailBlurb": "Info to be signed",
    "documents": [
        {
            "documentId": "1",
            "documentBase64": "Base64 string",
            "name": "Testfile1.pdf"
        }
    ],
    "recipients": {
        "signers": [
            {
                "email": "[email protected]",
                "name": "John Doe",
                "recipientId": "1",
                "routingOrder": "1"
                "tabs": {
                    "signHereTabs": [{
                        "anchorString": "[POS_Xn]"
                        "'documentId": "1"
                    }]
                }
             }
        ]
    },
    "status": "sent"
}