I’m being asked by discover to run a test transaction to update their system. Is this a scam

[bdhesq]

I received a call from someone that claims to be from discover card. They say that they need to update their system to show which card processor I am using. They want me to run a test transaction with a card number that they provide for $1. Is this legitimate or a scam. I have already run a discover transaction recently that went through 

[Ron]

Don't do it. It is a scam!!!

[Inthrutheout]

This is not a scam. If you go to https://www.discovernetwork.com/en-us/business-resources/test-your-terminal, you can see the steps to test your terminal. This test is to ensure that you do not have any issue processing Discover Cards. I called their fraud department and it is legitimate.

[katieand]

Jumping in here to remind all our sellers that Square accepts all cards, so no need to do this if you're not comfortable with it! But thanks for chiming in @Inthrutheout!

[angelrox]

I've tried the test a couple of times with different discover test numbers and am getting FAILED -- is that because of a decline or is there actually a problem?