When storing numeric fields, using an odd number of digits allows the sign to be included in the storage area without wasting any space.

For example the number -1234567, when packed as 7 digits is stored as follows.

1357
246-

thus taking up only 4 data slots. but when packed as 8 characters it uses 5 data slots

02467
0135-

or when 7 digits, non-packed, it will be stored as 8 data slots, including the sign.

FFFFFFF6
12345670

### Noncompliant code example

D NUMFLD S 8P 0
D NUMFLD S 7S 0

### Compliant solution

D NUMFLD S 7P 0