SharePoint Business Central Get Token

I've already tried to connect Business Central with Sharepoint using Postman, and both the GET and POST operations were successful. I'm currently attempting to do it on BC, but while the token has been created, it isn't functioning. I believe there may be a connection issue or a URL issue.

procedure HttpGet(AccessToken: Text; Url: Text /*var JResponse: JsonObject*/): Boolean
    var
        Client: HttpClient;
        Headers: HttpHeaders;
        RequestMessage: HttpRequestMessage;
        ResponseMessage: HttpResponseMessage;
        RequestContent: HttpContent;
        ResponseText: Text;
        IsSucces: Boolean;

    begin
        Headers := Client.DefaultRequestHeaders();
        Headers.Add('Authorization', StrSubstNo('Bearer %1', AccessToken));
        Headers.Add('Accept', 'application/json;odata=verbose');
        RequestMessage.Content.GetHeaders(Headers); //asd
        Headers.Remove('Content-Type');
        Headers.Add('Content-Type', 'application/json;odata=verbose');
        RequestMessage.SetRequestUri(Url);
        RequestMessage.Method := 'GET';

        if Client.Send(RequestMessage, ResponseMessage) then
            if ResponseMessage.IsSuccessStatusCode() then begin
                if ResponseMessage.Content.ReadAs(ResponseText) then
                    IsSucces := true;
                //     end else//         ResponseMessage.Content.ReadAs(ResponseText);// JResponse.ReadFrom(ResponseText);exit(IsSucces);

            end;

    end;