The URL couldn't be validated. Response does not match challenge

[ashwinijul13]

Thank you for API code

While doing setup in facebook getting error

The URL couldn't be validated. Response does not match challenge, expected value="1752482085", received="{"version":{"major":..."

can you please suggest what should i do?

[somaraj]

do you have a valid SSL ?

[ashwinijul13]

Thank you for your reply Yes SSL is there

That issue was resolved by changing framework from .net core to .net 4.5

But when i am testing application in facebook giving below error:

Can you please suggest

|Post Method called Response status code does not indicate success: 400 (Bad Request). 2021-09-15 15:35:39.4052|INFO|WebApplication1.Controllers.FBWebhooksController|Post Method called at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at WebApplication1.Controllers.FBWebhooksController.<Post>d__2.MoveNext()

[ebrahim3108]

Hi Somaraj,

Thank you for sharing your code. It really helped. Unfortunately I am facing the same problem as Ashwin. Getting the below error

System.Net.Http.HttpRequestException: Response status code does not indicate success: 400 (Bad Request).
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at I.Controllers.WebhooksController.<Post>d__2.MoveNext()

can you please help us resolve this. thank you

[ashwinijul13]

Hi Ebrahim,

Have you got the solution?

[MohammedMubeen]

Hi @ebrahim3108 , @ashwinijul13 , How you got the solution? 400 bad request.

var response = await httpClientLead.GetStringAsync(formUrl);