Cause
This error occurs if the signature of a method in the methodImplementations section of a schema file conflicts with the signature of the method in the current schema or as previously defined in the JadeMethodDefinitions section of the same schema file.
Action
Change the method signature to conform to the prior definition.
If you want to change the signature of a method that already exists in the current schema, define the new signature in the JadeMethodDefinitions section of the schema file and then provide the new implementation in the methodImplementations section.