Final answer:
Purchase Card Adjustments (PCA) are used to record Unauthorized Costs on Government Purchase Card (GPC) buys.
Step-by-step explanation:
Purchase Card Adjustments (PCA) are used to record Unauthorized Costs on Government Purchase Card (GPC) buys. These are costs that were not authorized or approved for purchase using the GPC. PCA is used to correct or adjust these unauthorized costs in the GPC system.
For example, if a GPC was accidentally used to purchase personal items or items that are not allowed under the cardholder's authority, a PCA would be used to record and adjust these unauthorized costs.
In summary, PCA is specifically used to record and rectify unauthorized costs on GPC buys.