What could cause "An operation was skipped during export because it has a wildcard action" error when publishing a service?

Question

I created an Orchestration in BizTalk, which I published as a service, using the tool WCF BizTalk. This resulted in a service hosted in IIS 7. When I changed the web.config file to enable debugging, I caught the following error:

Message
An operation was skipped during export because it has a wildcard action. 
This is not supported in WSDL.

Contract Name:ITwoWayAsync
Contract Namespace:http://BTKPruebas.pruebaWCF
Operation Name:TwoWayMethod

What might be causing this?

Answer 1

Some googling led me to this answer:

You can solve it by removing any * Charchter from ReplyAction.

[System.ServiceModel.OperationContractAttribute(Action="http://www.yyyyy.com/somthing/Registration/RegistrationService/version/2.1/getCoCRecordByMemberShipID", ReplyAction="*")]