Identifies the standard code for a Protective Connecting Arrangement (PCA).
NOTE 1: PCAs are grandfathered and are offered subject to on-the-shelf availability.
USAGE: This field is conditional.
NOTE 1: Required when the first position of the REQTYP field on the ASR Form is āEā, the PCA field on the SALI Form is populated and the PI field on the SALI Form is āYā, otherwise prohibited.
DATA CHARACTERISTICS: 5 alpha/numeric characters
EXAMPLE: C 2 3 4 W