ERROR 10548 - The merchant's account is not able to process transactions

[Nandini]

Hi,
I am getting this error even after i upgraded my sandbox account to pro but still its showing same error.

it worked successfully  for 3 times after upgrade and after that it is showing the  same error again and again.

email address of the sandbox account  is askwith.d-facilitator_api1.gmail.com

[MTS_Justin]

Hello,

The account was created in 2015 and appears to have a "pending" application for payments pro which I don't have the ability to approve within our sandbox environment.
Please create a new sandbox business account using a unique email address, upgrade the new account to payments pro and it should work for you as expected.

Let me know of any issues - Thanks !