Diagnosis
The POR subscriber number was entered incorrectly. The following errorsare possible:

• The POR subscriber number is too long. The program expected the short
number (5 characters).

• The check digit, that is, the 5th character of the short subscriber
number, is missing.

• The short POR subscriber number contains hyphens '-' or blanks ' '.

Procedure
Check the entry for the above-mentioned sources of error.