We have more than 300 custom fields in several objects. When we retrieve them using Metadata API it throws exception of "Wenservice callout failed: String limit exceeded 100000" so we are thinking of using wildcard to retrieve custom fields in parts.
I tried retrieving by using wildcard like Acc* , A* etc. but it doesn't work. Only single character * worked for me. Can we use wildcards in any other way. Is there any documentation?
Also, can we provide query option in Metadata API request by which can return first 100 fields then next 100?