Locating MID and M_KEY in Payment Center
Where do I find the MID and M_KEY inside Payment Center?
To locate your MID (merchant ID) number and/or your gateway Merchant Key (M_KEY) number, please navigate to the “Settings” Menu from the Menu bar of the Payment Center dashboard, as shown in the image below:
Next, click on the sub-menu “MID/M_KEY” to view both numbers, as shown below:
Note: the M_KEY values have been hidden for security reasons.
Alternatively, you may also find this information in the original welcome email that was sent you by Paya when your account was approved.