I've recently been given the task to do adds moves and changes on a Meridian 1 system. I've had to learn by trial and error, and I'm stuck trying to delete several digital extensions. When I'm at the REQ prompt (ld 20), and type in OUT followed by the TN, I receive an error message SCH8783. From all I've read, it is due to the BLF's on other extensions. I've gone in to those extensions and NUL'd the buttons on those phones, but the system still will not let me delete the original extension. In this case the extension is 2409, type is a 2616, cust is 0, and the TN is 16 1 12 5. I've tried OUTing the extension from ld 11 and I still get the same error message.
Any ideas would be greatly appreciated.
Thank you.

Show a printout of your TN and print the DNB of the prime number.