Are you registering for managed payments? If so these could be micro deposits which are part of the process. To quote from Ebay's help pages (accessed via help button top of all pages in ebay):

 

Using microdeposits

Alternatively, you can verify your account using two microdeposits (small payments) sent to your linked bank account.

Here's how to verify your account using microdeposits:

  1. Sign in to Seller Hub - opens in new window or tab or My eBay - opens in new window or tab.
  2. Select the banner to verify your bank account.
  3. Select Verify with microdeposits.
  4. Once they've reached your account (1-3 business days), sign in to Seller Hub or My eBay.
  5. Select the banner to verify your bank account and enter the microdeposit amounts.

It can take up to 3 business days for microdeposits to reach your account, and we'll email you to confirm they've arrived. The microdeposits will be withdrawn from your bank account within a few days.

Tip
Don't attempt to enter any amounts until the microdeposits have reached your bank account, as this could cause issues with verifying your account