New to FIX ATDL - need help with control for FIX restricted Tag

I have a requirement to create a drop down control for the Control for the FIX tag TimeInForce. However, when I attempt to have the vendor validate my xml file, it keeps returning the error “Restricted Tag has control”. Can someone please tell me the proper syntax for creating a control for a restricted tag?

Can you provide a snippet of the FIXatdl XML for the which includes your Parameters and Controls? That error message sounds like something specific to the FIXatdl parsing and rendering software one is using (for instance, that is not a message atdl4j would produce).