Hey there THRobinson,
Thanks for turning to the Community for support! Making sure you're able to delete unwanted transactions without running into issues is important. That being said, there are 2 ways you can delete transactions in QuickBooks. Follow the steps below to successfully delete Delayed credit.
Option one
1- Click on +New then select Delayed Credit
2- Click on the history icon (looks like a clock at the top left of the page)
3- Select the delayed credit from the list
4- When it opens, scroll to the bottom and hit More, then Delete
Option two
1- On the left navigation menu, select Bookkeeping
2- Next, click on Transactions, followed by All sales
3- Locate the Transaction in question (in this case the Delayed credit)
4- You'll see a drop down arrow under the Action column, click on it and select Delete.
If you cannot see the transaction in the list, try filtering the Type, Date and customer. I hope this helps! Here is a helpful guide for your reference.
If you have any other questions, feel free to reach back out to us.