How I know what’s my appid/Merchant No.?
Nomally Merchant No. and appid is same but appid starting
mch{Merchant No}.
Example
Merchant No = "30000". appid = "mch30000".
Merchant No.
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login at https://merchant.ksher.net/
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click at menu Account Information and see at "Merchant Information"
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you will see your "Merchant ID."
AppID
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login at https://merchant.ksher.net/
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click at menu "IT Integration" and see at "IT Integration Information"
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you will see "AppID"