declarator (aa...aa) requires [pointer_default] attribute.

The [pointer_default] attribute may be required when a pointer is specified by a structure member or when more than one pointer is specified by a parameter in the operation declaration.

aa...aa: Declarator

S: Continues syntactic and semantic analyses, without generating stubs.

O: When specified by a structure member, specify the [ptr], [ref], [pointer_default], or [ignore] attribute.

When specified by a parameter in the operation declaration, specify the [pointer_default] attribute.