Add new Item Price error

I was stuck at here, I can not add new Item anymore, I don’t know how to remove this block

Duplicate name Item Price RFD/00046
Item Price RFD/00046 already exists
Did not save
Another transaction is blocking this one. Please try again in a few seconds.

This will happen if you use data import. Has been fixed in v5

You will have to manually update the series for this:

Thanks a ton, I figured it out and did it manually.
Waiting to update my v4 to v5