When Integration Server creates consumer web service descriptors, it creates web service connectors which is a flow service. The web service connector usually contains logic and information/data required to invoke an operation specified in a WSDL (Web Service Description Language) document used to create the consumer web service descriptor.
As Integration Server creates consumer web service descriptors based on WSDL documents, it creates web service connectors for each operation the portType contains in the WSDL document. If, for example, a WSDL document contains 2 portType declarations, each of which contains 3 operations, then Integration Server creates a total of 6 web service connectors.
