It’s already matched. Log out and log back in it should clear of that screen. I had that happen to me last week.

Resolution for 'already matched issue: 'What does “This transaction has already been accepted.” mean?' available: Yes.

The already matched issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the already matched issue yourself by looking for a resolution described in the article. If it is a complex already matched issue or you are unable to solve the issue, you may contact us by clicking here or by using other already matched support options.

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