Reviewing the ACTION.instruction_details<INSTRUCTION_DETAILS> structure, found that INSTRUCTION_DETAILS.instruction_id<LOCATABLE_REF> is not really an id of an INSTRUCTION instance, but a selector for many INSTRUCTIONs that can happen at a certain path in a COMPOSITION.
Case Archetype: COMPOSITION has 1..* INSTRUCTION with same nodeId (multiple occurrences of the same INSTRUCTION in a COMPO).
id: reference to the VERSION which VERSION.data (COMPOSITION), contains the INSTRUCTION that needs to be referenced from INSTRUCTION_DETAILS
path: path to the INSTRUCTION
The problem is that the path is not an identifier of an INSTRUCTION instance, it is a selector and will match all the INSTRUCTION occurrences in the COMPOSITION.
The solution is to use the INSTRUCTION.uid instead of the LOCATABLE_REF on INSTRUCTION_DETAILS, like there is an INSTRUCTION_DETAILS.activity_id to reference the ACTIVITY instance.