Azure DevOps Service - Import Requests API is returning Page Not Found Error

Question

I am trying to import an repository from another repo,

From Microsoft Documentation I found the API endpoint should be like:
Trying to call the API from Postman

POST https://dev.azure.com/{organization}/{project}/_apis/git/repositories/{repositoryId}/importRequests?api-version=6.0-preview.1

Request Params

{  
 "parameters": {  
 "deleteServiceEndpointAfterImportIsDone": true,  
 "gitSource": {  
 "overwrite": false,  
 "url": "https://{organisation}@dev.azure.com/{organization}/{project}/_git/{repoName}"  
 },  
 "tfvcSource": null  
 }  
}  

Source - https://learn.microsoft.com/en-us/rest/api/azure/devops/git/import-requests/create?view=azure-devops-rest-6.0

Passing Authorization in the header by converting PAT like this

"Basic " + Convert.ToBase64String(System.Text.Encoding.ASCII.GetBytes(string.Format("{0}:{1}", "", pat)));  

Via API

                        ImportRequest importrequest = new ImportRequest()  
                        {  
                            Parameters = new Parameters()  
                            {  
                                DeleteServiceEndpointAfterImportIsDone = true,  
                                GitSource = new GitSource()  
                                {  
                                    Overwrite = true,  
                                    Url = "https://{organisation}@dev.azure.com/{organization}/{project}/_git/{repoName}",  
                                },  
                                TfvcSource = null,  
                                ServiceEndpointId = "",  
                            },  
                        };  
                        var clientImportRepo = new RestClient($"{devopsURL}{project.id}/_apis/git/repositories/{reponame}/importRequests?api-version=6.0-preview.1");  
                        var createImportProjects = new RestRequest();  
                        createImportProjects.Method = Method.Post;  
                        createImportProjects.AddJsonBody(importrequest);  
                        createImportProjects.AddHeader("Authorization", "Basic " + Convert.ToBase64String(System.Text.Encoding.ASCII.GetBytes(string.Format("{0}:{1}", "", pat))));  
                        var responseImportepo = await clientImportRepo.ExecuteAsync(createImportProjects);  

I am not able to import repository. Please help me on this

Note,
PAT is having full access.
Both the repos are of Private type.
Target Repo is empty.
Able to import from Azure DevOps Portal, But i need to achieve this from API Code.

Answer 1

@Ravitheja Garre - Thanks for reaching out.

Devops is not currently supported here on Microsoft QnA.
The Community Members and Engineers are actively answering questions in dedicated forums here. Please post your question in that forum:
https://developercommunity.visualstudio.com/spaces/21/index.html
https://azure.microsoft.com/en-in/support/devops/

Hope this helps.

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