An SVCDUMP captured for all RMOSTC tasks pointed to Common Services module CAIFLOID.
It was established that the module had been previously assembled and linked with the attribute RMODE=ANY, instead of RMODE=24.
The use of RMODE=ANY resulted in the module being loaded above-the-line.
The customer's SMP/E job, that had been used to apply previous maintenance, was using an incorrect OPTIONS member.
It was using OPTIONS(B6DOPT), rather than OPTIONS(CAIOPT), which resulted in the module being linked with RMODE=ANY.
The client was given CSS 14.1 PTF RO96513 (and its pre-requisite PTFs) to apply, using the correct OPTIONS(CAIOPT).
This resulted in a re-link of module CAIFLOID with RMODE=24, allowing the module to load below-the-line.
The module was reloaded by performing a refresh of LMP :
PRODUCT(CAIRIM) VERSION(CAS9) INIT(CAS9INIT) PARM(REFRESH(LMP))
All Deliver RMOSTC tasks were then able to start successfully