A family of Microsoft relational database management systems designed for ease of use.
When you copy some data and paste them into a table in Access, some of the data might fail to be pasted because they don't have the correct size or format for the destination.
If that happens, Access will create a table named Paste Errors that contains details of the records that failed. Immediately after pasting, it can be worthwhile to see if such a table has been created, and if so to use it to find out what caused the problem.
After that, you can safely delete the Paste Errors table without adverse effects.