Software, Which Version of Restricted Software Should Be Used on HDE15.0 M4 + SP03?

Which Version of Restricted Software Should Be Used with HDE15.0 M4 + SP03 Software See Long Description FE states the new HDe system he installed is running HDE15.0_M4_ 0943.c Applications software, but the Restricted Service CD 5220227-2 that he received is labeled HDE15.0_M4_ 0916.a. I understand that HDE15.0_M4_0943.c Applications software is really HDE15.0 M4+SP03, which is not mandatory to have (see service note SN DOC0684441 ), and per the Service Note SN DOC0679751 Rev 2 "HDe Ver15.0 M4 Software Compatibility Table", all versions of HDE15.0 M4 Application software use the 5220227-2 Signa HDe 1.5T Restricted Service software. I looked this part number up in ePDM (My Workshop) and found the latest revision of this part number is "Rev. 1". Then I looked at the Rev. 1 PSP print for this part in ePDM (see attached) and it is shown to be HDE15.0_M4_0916.a. He said he was able to load this version of Restricted Service software onto the system anyway. We expected there would be a conflict, but it loaded. Should we use this release on this system? Checking other HDe systems, I found there are 287 systems running the earlier version of Applications software, and 42 systems are running the later version. When will we have a common release in the Installed Base? I have two questions: 1. Will the HDE15.0_M4_0916.a Restricted Service software work on the HDE15.0_M4_0943.c Applications platform, and if not, what should we do, reload the earlier Applications release or somehow get a later Restricted Service release, if it exists? 2. Are all forward production systems being sent with the later version loaded? When will all HDe systems be running a common release of software?