---
title: "External Transaction Code"
type: OpenSpec
status: Draft
domain: Reward Campaign Management
---

# External Transaction Code

## Requirement Definition
Maps incoming transaction codes from external systems (e.g., Card System) to OLS Transaction Codes.

## Process Flow

### Pre-Conditions
- Users must have access rights in the module.

## Business Rules

### Data Schema

| Field Name | Description | Logic Type | Constraints / Rules |
|---|---|---|---|
| External Transaction Code | Source System Transaction Code. | String (10) | Required. |
| Description | Description for reference. | String (30) | Required. |

### Execution
- An External System TC is the first key used to locate the corresponding OLS TC for processing.
- Each External TC must be mapped to an OLS TC.
- Supports Maker-Checker approval workflow (Pending -> Active).

## Exception Flow
- N/A