Since I am not familiar with your database structure, I will have to guess on what exactly causes the problem. Is the table you are copying to empty, or does it contain existing data? Does the entry '600-15691869000' exist in both tables?

If it does contain data, you will either have to delete that data before copying from the other table, or make sure you do not attempt to copy the entries that exist in both tables.

I may be wrong, but give us some more information about your database structure and existing data, and I am sure someone will be able to help you.