An mspl file extension is related to the RPAS (Retek Predictive Application Server). An mspl file contains configuration.
MSPL file extension - RPAS configuration
What is mspl file? How to open mspl files?
File type specification:
The mspl file extension is used for one of the RPAS configuration files. RPAS means Retek Predictive Application Server.
Most likely some old format without support. No further information could be found.
This mspl file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.