I am getting an error Misused header name 'Authorization' with DocuSignClient

Question

I am converting code from the legacy authentication to OAuth and using the new DocuSignClient in .net. I am able to get the Access Token, but when I call the CreateEnvelope, it returns Misused header name, 'Authorization'.

My code (in VB.NET)

Dim docuSignClient = New DocuSignClient("https://demo.docusign.net/restapi")
docuSignClient.Configuration.AddDefaultHeader("Authorization", "Bearer " & accessToken)

Dim envelopesApi = New EnvelopesApi(docuSignClient)

Dim envelopeDefinition = GetEnvelopeDefinition()

Dim results = envelopesApi.CreateEnvelope(clientID, envelopeDefinition)

Sai.Dandamudi · Answer

Hello TeamTry adding the bearer token directly to Configuration.DefaultHeader instead of calling AddDefaultHeader:Dim docuSignClient = New DocuSignClient("https://demo.docusign.net/restapi")docuSignClient.Configuration.DefaultHeader("Authorization") =    "Bearer " &amp; accessToken.Trim()Dim envelopesApi = New EnvelopesApi(docuSignClient)Dim results = envelopesApi.CreateEnvelope(accountId, GetEnvelopeDefinition())Make sure accessToken contains only the token, without an existing Bearer  prefix, and that accountId is the Docusign account ID rather than the integration key. This is the header configuration pattern shown in the Docusign .NET SDK documentation.BestRegardsSai

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