I was trying to test a web service ... facing error while selecting the service

Let me take a look at the WSDL you sent.

Thanks Eduardo .. will wait for your findings !

I was able to reproduce the behavior with your steps. Let me dig a little bit more into it.

Sure Eduardo !!

Eduardo check Aleksi White last three comments - forum.appian.com/.../e-113805

It could be related, but in general the root cause is:

1. Most likely for the reason Aleksi explain in that link Appian handles part of the definition of the enumreation through the creation of a data type called ACHTypes?key (notice that it has ?key as part of the name so don't confuse it with ACHTypes)

{schemas.datacontract.org/.../Ryder.Enterprise.DataTransferObjects}ACHTypes

2. This data type is NOT visible in the Data Management Tab, therefore you cannot delete it to refresh the web service node, and since deleting all CDTs is a requirement you get the error you're seeing.

3. The way I was able to workaround this is by explicitly deactivating this data type (to mimic the "Delete" action in the Data Management tab) through the API with the TypeService.deactivate method.

*TypeService.deactivateTypes(java.lang.Long[])
forum.appian.com/.../TypeService.html

You can build a custom smart service that will run the following code:

QName qName = new QName(namespace, name);
Datatype dataType = ts.getTypeByQualifiedName(qName);
ts.deactivateTypes(new Long[]{dataType.getId()});


and will take two node inputs, the namespace and name of the CDT to "delete". You can then invoke it passing:

namespace = "schemas.datacontract.org/.../Ryder.Enterprise.DataTransferObjects";

name = "ACHTypes?key";

Thanks Edurado !