Reverse charge

POST

/v1/actions/hospitality.action.reverse_charge/apply

curl --request POST \
  --url https://api.aerandil.com/v1/actions/hospitality.action.reverse_charge/apply \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{ "branch": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "params": { "note": "example", "reason": "duplicate_posting" }, "return_modified": false, "target": { "id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "object_type": "hospitality.charge" } }'

• Production API

Take back a posted charge by minting an equal-and-opposite reversal charge, linked to the original via charge_reverses_charge. Full-amount only: amount, tax lines, and gratuity are mirrored negated, so the pair nets to zero in the folio balance and in every per-bucket / per-kind rollup. The original stands (voided stays false) — both lines show, which is how a corrected bill reads. The reversal lands on the charge’s own folio while it is open; once sealed, it lands on the open rebate folio linked via folio_rebates_folio — a sealed bill within the reopen window goes through reopen_folio first, beyond it through open_rebate_folio. Refuses a voided charge, a reversal charge (never chained — reverse the original), and a package-attributed charge (night-audit reconciliation owns those). Re-applying to an already-reversed charge is a no-op.

Effects: create hospitality.charge; create hospitality.tax_application; link hospitality.link.folio_has_charge; link hospitality.link.charge_at_outlet; link hospitality.link.charge_for_service_item; link hospitality.link.charge_via_credential; link hospitality.link.charge_has_tax_application; link hospitality.link.charge_reverses_charge; modify hospitality.folio.

Authorizations

• aerandil_oauth
  actions:apply
• aerandil_oauth
  actions:hospitality.action.reverse_charge:apply

Request Body^required

Media typeapplication/json

object

branch

Apply against an open branch’s overlay view instead of the canonical (main) plane. The action’s writes land in the branch’s copy-on-first-write overlay, its events in the branch’s own stream, and the invocation is journaled for merge-by-replay. Branch writes are action-only, so this is the write-side entry point to a branch (POST /v1/branches forks one).

string format: uuid

params

required

object

note

Free-text detail; required when `reason` is `other`

string

reason

required

Why the charge is being taken back

string

Allowed values: duplicate_posting posting_error overcharge_correction disputed_item service_recovery other

return_modified

When true, the response carries modified_objects and modified_links projections — the engine reads the event log inside the same transaction so the projection observes the handler’s own writes.

boolean

target

required

object

id

required

string format: uuid

object_type

required

Allowed value: hospitality.charge

Responses

200

Action applied. modified_objects and modified_links populated when return_modified: true was supplied.

Media typeapplication/json

ApplyActionResponse

Envelope returned by the Aerandil action engine. correlation_id ties every event emitted by this invocation; modified_objects and modified_links project the events the handler emitted (per the action’s declared effects); warnings carries any non-blocking soft-validator observations.

object

correlation_id

required

Per-invocation correlation id; matches events.correlation_id for every event this action appended.

string format: uuid

modified_links

required

Links established or removed by this invocation. Empty when the caller did not request return_modified.

Array<object>

object

from_id

required

string format: uuid

from_type

required

string

kind

required

Allowed values: linked

link_type

required

Allowed values: hospitality.link.folio_has_charge hospitality.link.charge_at_outlet hospitality.link.charge_for_service_item hospitality.link.charge_via_credential hospitality.link.charge_has_tax_application hospitality.link.charge_reverses_charge

to_id

required

string format: uuid

to_type

required

string

modified_objects

required

Objects created, modified, or soft-deleted by this invocation. Empty when the caller did not request return_modified.

Array<object>

object

id

required

string format: uuid

kind

required

Allowed values: created modified

object_type

required

Allowed values: hospitality.charge hospitality.tax_application hospitality.folio

warnings

Non-blocking soft-validator observations emitted during this invocation (e.g. comp-authority over-limit, recipe pour-cost over sell-price). Absent when no warnings were emitted.

Array<object>

object

message

required

Human-readable summary, suitable for logging or operator-UI surfacing.

string

object_type

required

Object type the warning was raised against.

string

property

Property the warning anchors to, when a single field is the locus. Absent for multi-field rules.

string

rule

required

Stable kebab-case rule identifier (e.g. comp-authority-over-limit).

string

Example

{
  "modified_links": [
    {
      "kind": "linked",
      "link_type": "hospitality.link.folio_has_charge"
    }
  ],
  "modified_objects": [
    {
      "kind": "created",
      "object_type": "hospitality.charge"
    }
  ]
}

409

Conflict — concurrent modification or unique constraint violation.

422

Validation error — parameter validation or business-rule violation.