What do I have:
- custom object my__customObject__c from managed package. It is deployed.
- service built using Enterprise WSDL.
- Partial Copy sandbox
Service tries to execute 'SELECT Id FROM my__customObject__c' query using Administrator account (so there should be no problem with permissions)
It works perfectly in production, but fails in sandbox with:
INVALID_TYPE: sObject type 'my__customObject__c' is not supported.
I tried to execute the same query using 3rd party tools and sandbox credentials (that I suppose uses Partner WSDL), and it executes perfectly.
UPD1. there is also custom object 'customObject__c'