Subscribe API - value for message.network_participant[0].type - TSP Seller

[MRaoM]

What is the value to be given for the type to subscribe an "Technology Service Provider (TSP) - Seller". I am getting the error "message.network_participant[0].type: is required or Invalid." if I give the following value. Please suggest

"network_participant": [
{
"subscriber_url": "/",
"domain": "ONDC:NTS10",
"type": "tspSeller",
"msn": true,
"city_code": [
"std:080"
]
}

[MRaoM]

Currently the following types are supported. Please suggest what is suitable type for "Technology Service Provider (TSP) - Seller".

subscriber_type_mapping = {
"BG": "gateway",
"BAP": "buyerApp",
"BPP": "sellerApp",
}