Create Top-up Benefit

Creates a wallet top-up benefit definition. Example curl: ```bash curl --request POST '{{base_url}}/sp/wallet/topup-benefits/create' \ --header 'Authorization: Bearer {{access_token}}' \ --header 'Content-Type: application/json' \ --data-raw '{ "idempotency_key": "{{$timestamp}}-wallet-benefit-create", "title": "Top Up 100 Get 10", "amount": 100, "promo_amount": 10, "location_id": {{location_id}}, "status": "active" }' ``` Example success response shape: ```json { "success": true, "message": "Top-up benefit created successfully.", "data": { "benefit_id": 1, "title": "Top Up 100 Get 10", "amount": 100, "promo_amount": 10, "status": "active" }, "meta": {} } ``` Example error response shape: ```json { "success": false, "message": "The same idempotency_key cannot be reused with a different payload.", "error": { "code": "idempotency_key_reused_with_different_payload", "details": {} } } ``` Common platform errors: - `idempotency_key_required` - `sp_scope_not_granted` - `sp_token_scope_missing` - `sp_location_not_allowed` - `legacy_field_not_allowed` - `query_parameters_not_allowed` - `invalid_content_type`