Diagnosis
The name may be invalid because one of the following rules has not beenobserved.

• The name must begin with a letter.


• The name can contain only the following characters:

letters
numbers
underscores
It can also end with blanks.

• You may not use the name HEADER


• The names of additional fields may not be longer than 21 characters

System Response

Procedure
Specify a valid name.