explicit list of prior-states for agency_pick_up

Author: thekaveman

general-information.md

@@ -156,7 +156,7 @@ Note that to handle out-of-order events, the validity of the prior-state shall n
 | `available` | `non_operational` | `unspecified`        | The vehicle became unavailable, but he Provider cannot definitively (yet) specify the reason. |
 | `available`, `non_operational`, `elsewhere` | `removed`     | `rebalance_pick_up`  | The provider picked up the vehicle for rebalancing purposes |
 | `available`, `non_operational`, `elsewhere` | `removed`     | `maintenance_pick_up` | The provider picked up the vehicle to service it |
-| any | `removed`     | `agency_pick_up`     | An agency picked up the vehicle for some reason, e.g. illegal placement |
+| `available`, `non_operational`, `elsewhere`, `unknown` | `removed`     | `agency_pick_up`     | An agency picked up the vehicle for some reason, e.g. illegal placement |
 | `available`, `non_operational`, `elsewhere` | `removed`     | `compliance_pick_up` | The provider picked up the vehicle because it was placed in a non-compliant location |
 | `available`, `non_operational`, `removed`, `elsewhere`, `unknown` | `removed`     | `decommissioned`     | The provider has removed the vehicle from its fleet |
 | `unknown`, `non_operational`, `available`, `elsewhere` | `removed`     | `unspecified`        | The vehicle was removed, but the provider cannot definitively (yet) specify the reason |