Replace rules for physical parent segment A

The replace rules for PP segment A control the replacement of PP A using the logical path to PP A.

The rules are as follows:

To disallow the replacement of PP A on its logical path and receive an 'RX' status code if the rule is violated by an attempt to replace PP A, use the physical replace rule.
To disregard the replacement of PP A on its logical path, use the logical replace rule.
To allow the replacement of PP A on its logical path, use the virtual replace rule.