PersonWantsOrg "Method MakeDecision was not found."

Any ideas? 

Did you check that this method is available in the ObjectBrowser for the same request (PersonWantsOrg entry with the same PK)? The method is only available for requests having a running approval process.

Hello! 

Yes, this method is available in the ObjectBrowser for the same request. 

Are you using the same user and authentication method in the Object Browser and during your REST call?

Did you provide all parameters needed in the body?

Yes. I am using the same user and auth method in the Object Browser and in the REST call. 

$Param1 = "d6d14a3a-c8fd-46fe-9daf-9a61a8d4180d"
$Param2 = "True"
$Param3 = "ok"
$body = @{values = @{Param1 = $Param1; Param2 = $Param2; Param3 = $Param3 } } | ConvertTo-Json

$newURI = (Invoke-RestMethod -Uri "https://server/AppServer/api/entity/PersonWantsOrg/dd85aaa8-d4cb-4804-bc32-2c45d75cd1e4/method/MakeDecision" -WebSession $wsession -Method Put -Body $body -ContentType "application/json; charset=utf-8").uri

Yes. I am using the same user and auth method in the Object Browser and in the REST call. 

$Param1 = "d6d14a3a-c8fd-46fe-9daf-9a61a8d4180d"
$Param2 = "True"
$Param3 = "ok"
$body = @{values = @{Param1 = $Param1; Param2 = $Param2; Param3 = $Param3 } } | ConvertTo-Json

$newURI = (Invoke-RestMethod -Uri "https://server/AppServer/api/entity/PersonWantsOrg/dd85aaa8-d4cb-4804-bc32-2c45d75cd1e4/method/MakeDecision" -WebSession $wsession -Method Put -Body $body -ContentType "application/json; charset=utf-8").uri

The JSON you use in the body is wrong.

{
    "values":  {
                   "Param2":  "True",
                   "Param1":  "d6d14a3a-c8fd-46fe-9daf-9a61a8d4180d",
                   "Param3":  "ok"
               }
}

According to the documentation https://support.oneidentity.com/de-de/technical-documents/identity-manager/8.1.1/rest-api-reference-guide/11#TOPIC-1250854 it has to be

{
    "parameters":  [
                   "True",
                   "d6d14a3a-c8fd-46fe-9daf-9a61a8d4180d",
                   "ok"
    ]
}

Thus you need to change the $body to be

$body = @{values = @{Param1 = $Param1; Param2 = $Param2; Param3 = $Param3 } } | ConvertTo-Json

I changed the $body: 

$body = @{parameters = @("True", "d6d14a3a-c8fd-46fe-9daf-9a61a8d4180d", "OK") } | ConvertTo-Json
 $body
{
    "parameters":  [
                       "True",
                       "d6d14a3a-c8fd-46fe-9daf-9a61a8d4180d",
                       "OK"
                   ]
}
 $newURI = (Invoke-RestMethod -Uri "https://server/AppServer/api/entity/PersonWantsOrg/dd85aaa8-d4cb-4804-bc32-2c45d75cd1e4/method/MakeDecision" -WebSession $wsession -Method Put -Body $body -ContentType "application/json; charset=utf-8").uri
Invoke-RestMethod : {"responseStatus":{"errorCode":"NotFound","message":"Method MakeDecision was not found.","errors":[]}}
At line:1 char:12
+ $newURI = (Invoke-RestMethod -Uri "https://server/AppServer ...
+            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebException
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRe

Sorry, my bad. I stumbled over the wrongly ordered parameter in your first JSON and copied that over to my example. Sorry about that.

The order of the parameters has to be

• uidPerson
• decision (True/False)
• reason

{
    "parameters":  [
                   "d6d14a3a-c8fd-46fe-9daf-9a61a8d4180d",
                   "True",
                   "ok"
    ]
}

By the way, if you take a look at the log of the Application Server you will get a more detailed error message.

In log the Application Server: 

 в System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   в System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   в ServiceStack.Host.ServiceRunner`1.<ExecuteAsync>d__13.MoveNext()
2020-01-30 17:56:35.5422 ERROR (ObjectLog b54fdd30-5a58-4e23-a971-a2cc7a381c6a) : [ServiceStack.HttpError] Method MakeDecision was not found.
 ServiceStack.HttpError: Method MakeDecision was not found.
   в QBM.AppServer.Api.SingleService.<Put>d__4.MoveNext()

When I use:

{
    "parameters":  [
                   "d6d14a3a-c8fd-46fe-9daf-9a61a8d4180d",
                   "True",
                   "ok"
    ]
}

I get same error: "Method MakeDecision was not found."

While trying to reproduce your use-case I remembered that you have to provide the optional parameters as well when calling the method using the REST-API. You can leave them empty, but they do need to exist.

So the JSON body needs to look like this:

{
    "parameters":  [
                       "d6d14a3a-c8fd-46fe-9daf-9a61a8d4180d",
                       "True",
                       "ok",
                       "",
                       ""
                   ]
}

Thanks!