The text in Section 3.1 of WD-ObjObsSAP-1.0-20250529 says "Parameter names are case-insensitive".
This is in line with DALI 1.1 section 3.1 (and PR-DALI-1.2-20251024 sec 4.1) which says:
Parameter names are not case sensitive; a DAL service must treat upper-, lower-, and mixed-case parameter names as equal.
However, as discussed elsewhere case sensitivity for parameter names in HTTP APIs is probably a Bad Thing, and in particular causes problems for OpenAPI implementations.
There is discussion on changing this DALI policy at DALI issue #21, and recent comments there suggest that new standards such as ObjObsSAP (which does not have a significant existing base of implementations) could reasonably diverge from DALI recommendations in this respect and require case-sensitive use of parameters.
So: how about instead stating in ObjObsSAP that parameter names are case-sensitive? If so, we have to choose whether we're going to use lowercase or UPPERCASE; most but not all references to the parameters in the document text are currently upper case, so I'd suggest sticking with that.
The text in Section 3.1 of WD-ObjObsSAP-1.0-20250529 says "Parameter names are case-insensitive".
This is in line with DALI 1.1 section 3.1 (and PR-DALI-1.2-20251024 sec 4.1) which says:
However, as discussed elsewhere case sensitivity for parameter names in HTTP APIs is probably a Bad Thing, and in particular causes problems for OpenAPI implementations.
There is discussion on changing this DALI policy at DALI issue #21, and recent comments there suggest that new standards such as ObjObsSAP (which does not have a significant existing base of implementations) could reasonably diverge from DALI recommendations in this respect and require case-sensitive use of parameters.
So: how about instead stating in ObjObsSAP that parameter names are case-sensitive? If so, we have to choose whether we're going to use lowercase or UPPERCASE; most but not all references to the parameters in the document text are currently upper case, so I'd suggest sticking with that.