Hi Loly,
Each TMC receiver has its own 10-digit ID.
This one is another number then nuvi ID, you can find it only when nuvi is connected to TMC receivers. Go to menu Tools, Settings, Traffic, Subscriptions, Add and see message containg your TMC receiver ID.
See Post number 1 for providers
example
Slovenia, Radio SI/TrafficNav (SI): 18689, 33, 33, 1
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