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rogersmj Frequent Visitor
Frequent Visitor

Trouble with import API

I am trying to develop an Azure Logic App to automate some very painful aspects of our deployment/customer provisioning processes. Part of that process involves uploading a reference PBIX to the Power BI service (and subsequently setting parameters/gateway settings).


I have a PBIX file in Azure blob storage, and I read the contents of it using the Get Blob Content action. When I call the Imports API (using a basic Logic Apps HTTP action), I am getting a 400 (bad request) response. Initially I was simply getting Unknown Error as the response, but now at least I have reached the point where I am getting a MultiPartMimeStreamFormatException:


  "error": {
    "code": "MultiPartMimeStreamFormatException",
    "pbi.error": {
      "code": "MultiPartMimeStreamFormatException",
      "parameters": {},
      "details": [],
      "exceptionCulprit": 1


However I can't figure out what this exception means or why it is happening. I have pored over all the docs -- which are very thin -- and this blog post from more than three years ago announcing the beta of this API, and I have reviewed the official W3 specs for submitting a file as multipart form data. My raw submission (below) appears to match the format described in that blog post.


Here's my request:


    "uri": "",
    "method": "POST",
    "headers": {
        "Content-Type": "multipart/form-data; boundary=----------------abcdefg12345"
    "authentication": {
        "value": "*sanitized*",
        "type": "Raw"
    "body": "----------------abcdefg12345\nContent-Disposition: form-data; name=\"files\"; filename=\"MasterTemplate.pbix\"\nContent-Type: application/octet-stream\n\nPK\u0003\u0004\u0014\u0000\u0000\u0000\b\u0000Mu1My#\u0004�\n\u0000\u0000\u0000\b\u0000\u0000\u0000\u0007\u0000\u001c\u0000Version <TRUNCATED>"
jbrandt Frequent Visitor
Frequent Visitor

Re: Trouble with import API

Hi there, did you ever figure this out?