Identify SAP Production Systems (from Business suite systems)

Hello,

We have these systems.

DEV, QAS, TRN, CMS and PRD

I received a message from SAP mentioning;

According to our records, you currently have 5 SAP Business Suite systems. 2 of these are production systems

pl, help me to identify what are the SAP Business Suite systems they are talking about.

Is it DEV,QAS,TRN,CMS and PRD ?

what are the 2 production systems? Since we have only 1 PRD

(Is CMS also treated as a production system )

Kindly guide me to clarify the above message

regards,

Zerandib