XTCE12 — CommandContainerType

A fixed value cannot be added to a container created in the ContainerSet but only to a
container created in the MetaCommand object. In SCOS 2K, fixed values would be added in
the Meta Command and this cannot be done. Add the Fixed Area support to container defined with the MetaCommand would help

Specification allows fixed values in CommandContainers

XTCE does support the required functionality of a fixed value, and combinations of containers can support the desired structure. The element FixedValueEntry is available in the MetaCommand/ CommandContainer/EntryList but not in the CommandContainerSet.
One possible workaround would be to carefully "divide" a container between metacommand and command container. In other words given a container that consists of 11 parameters, let the 6th one be fixed. Simply create two containers, the 1st contains the first 5 parameters. This would be ref'd in MetaCommand area. Then define the 6th FIXED value, and finally Ref the 2nd set of parameters in 2nd container in the metacommand entry list.