Stumbled on QuickBooks Error Code C=51?
So, this error can be caused due to:
• Alterations in txLists.

How to fix Error C=51?

Creating the backup of the company file.
Create a backup of your company file and also make sure that size of the file is greater than 6MB.
This will fix Error C=51.

And that’s all!! If you feel you are stuck on anything, you can reach out to us at +1(888) 910 1619 and we will be happy to help you.