Power Query is sending multiple requests when using Web.Contents

Hi,

We have a situation where a POST API call is followed by a GET call. We are using Web.Contents to create a POST API call to a GRAPH API. In the next step, we extract the ID from the response to make a GET API call to fetch records. However, we have noticed that Power Query is making multiple POST requests. We have disabled data preview in the background and set parallel loading to 1. Kindly help in resolving the issue. Our focus is to make a single POST call. Below is an example of the Power Query script:

let 

access_token = "xxxx",

GetId = () =>
                let
                    // Define the URL for the POST request
				    url = "https://posturl1", // GRAPH API

				    // Define the headers for the POST request
				    headers = [
				        #"Content-Type" = "application/json",
				        #"Authorization" = "Bearer " & access_token
				    ],

				    currTime = Text.From(DateTime.LocalNow()),

				    // Define the body of the POST request
				    body = "{
				        ""displayName"": """ & currTime & """, 
				        ""filterStartDateTime"": ""2025-02-24T07:02:00"",
				        ""filterEndDateTime"": """ & currTime & """
				    }",

				    // Convert the body to binary
				    binaryBody = Text.ToBinary(body),

				    // Make the POST request
				    response = Web.Contents(url, [
				        Headers = headers,
				        Content = binaryBody
				    ]),

				    // Parse the JSON response
				    jsonResponse = Json.Document(response),

				// Extract the ID field from the JSON response
				    extractedId = if Record.HasFields(jsonResponse, "id") then jsonResponse[id] else null
			in
			extractedId,

ExtractedIdResult = try GetId() otherwise null,

    FetchRecords = () =>
				OData.Feed(
					"https://geturl2/" & ExtractedIdResult & "/records", // GRAPHAPI
					[Authorization = "Bearer " & access_token],
					[ExcludedFromCacheKey = {"Authorization"}, ODataVersion = 4, Implementation = "2.0"]
				),

    Records = if ExtractedIdResult <> null then
        let
             records = Function.InvokeAfter(FetchRecords, #duration(0,0,5,0)) // 5minute delay
        in
            records
    else
        #table({}, {}),