Get a printout of your CoS. The SOC code appears under "job type". Although you don't know at present what the job SOC code is your job doesn't appear to be a current shortage occupation:
https://www.gov.uk/government/uploads/s ... pril14.pdf
Seek clarification from your sponsor if it was at the time they assigned the CoS.
btw - SOC = standard occupational classification.
RLMT is not required for shortage occupations, it is one of the exemptions.
Your sponsor may have made a mistake by ticking the shortage occupation box when assigning your CoS. This can be corrected by a sponsor note but only before you make your visa application.
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