I received a refund for a magazine subscription to my business credit card. how do I reconcile or categorize this? I am getting errors - stuck!

Categorize it back to the expense ie Subscriptions expense, or Dues & Subscriptions expense. Depending how you have your expenses set up.

Thanks for visiting the Community, @userkaley-dessauer. I'm glad to help you out with your refund transactions.  

When you receive a refund from a vendor, you'll need to record the refund as to how you record your purchases. These are the process that we are following:

1. Create vendor credit.
2. Create a bank deposit.
3. Link the vendor credit and the bank deposit.

Check out below for the detailed instructions from Steps 1-3:

Step 1: Create the Vendor Credit

1. Select +New, then choose Vendor credit.
2. In the Vendor drop-down, select your vendor.
3. Enter the Category details or Item details as to how you record the subscription item with this vendor, then click Save and close

Step 2: Create the Bank Deposit

1. Go back to the +New menu, then select Bank Deposit. 
2. Select the account where you got the refund in the Account drop-down.
3. Select the vendor, then the Accounts Payable in the FROM ACCOUNT column.
4. Enter the method your vendor used to refund you, then enter the refund in the AMOUNT column.
5. Click Save & Close.

Step 3: Use Pay Bills to connect the bank deposit to the vendor credit

Though you aren’t paying a bill, this is the right thing to do to keep your vendor expenses accurate. 

1. Go to the + New menu again, then select Pay Bills.
2. Choose the bank deposit you just created. You’ll now see the amount of the vendor credit in the Credit Applied field. The Total payment should be $0.00.
3. Select Save and close.

You can also check out this article for more insights about applying vendor credit to a bill in QuickBooks Online: Enter a refund from a vendor.

For future reference, read through this article should you need to apply vendor credit to the future bill: Enter a credit from a vendor.

Get back here at any time if you need additional assistance in doing any of the steps above. I'd be delighted to help you more.