2051: CUSTOMER WITH NO CODE
Warning: do not delete the customer record from the Programmers window.
Go to the customer listed on the diagnostics.
See if the customer had a code and if was deleted or if it was not assigned. If not assigned, go to the customer window and click insert. This will give you the next available customer code assigned by PF. eg: 104. Close window and remember this number. If code was deleted remember the deleted number.
Hold down control key while clicking the word code with the mouse. This will bring you to the programmers window. Click edit and enter the code. Click OK.