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Validate Record external refund (dry-run)

POST
/v1/actions/hospitality.action.record_external_refund/validate
curl --request POST \
--url https://api.aerandil.com/v1/actions/hospitality.action.record_external_refund/validate \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{ "branch": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "params": { "external_ref": "example", "psp_refund_reference": "example", "refund_amount": { "amount": "example", "currency": "example" }, "refund_note": "example", "refund_reason": "duplicate", "refund_requested_at": "2026-04-15T12:00:00Z" }, "return_modified": false, "target": { "id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "object_type": "hospitality.payment" } }'

Dry-run of apply_hospitality_action_record_external_refund’s parameter checks. No side effects, no idempotency reservation, no handler dispatch — just the schema pass plus action-level shape (target presence, target type, unknown-parameter rejection). return_modified is meaningless here and ignored.

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
external_ref
required
Source-system key (makes the record replay-safe)
string
psp_refund_reference
The vendor's processor reference for the refund, when it has one
string
refund_amount
required
Refund amount (magnitude; either sign accepted)
object
amount
required
string format: decimal
currency
required
string format: iso-4217
refund_note
The vendor's free-text reason, max 1024 chars
string
refund_reason
Closed REFUND_REASONS taxonomy (defaults to `other` — vendors send free text, which lands in refund_note)
string
Allowed values: duplicate fraudulent requested_by_customer reservation_cancelled deposit_return service_recovery overcharge_correction no_show_policy_exception package_component_refund membership_cancellation chargeback_prevention other
refund_requested_at
Refund instant in the source system (defaults to now)
string format: date-time
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.payment

Validation outcome. result is valid or invalid; per-parameter diagnostics are always populated for every declared parameter so a UI can render the action’s full surface.

Media typeapplication/json
object
action
required
string
errors

Action-level errors not tied to a single parameter (missing target, target type mismatch, unknown parameter names). Absent when empty.

Array<string>
parameters
required

Per-parameter diagnostics keyed by api_name.

object
key
additional properties
object
errors
Array<string>
result
required
Allowed values: valid invalid
value
required

The serialised value the server interpreted, or null if the parameter was not supplied.

result
required
Allowed values: valid invalid
Example
{
"parameters": {
"additionalProperty": {
"result": "valid"
}
},
"result": "valid"
}