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Mulltiply Sync API Documentation

This documentation explains how source system data is transformed and sent to the API across customer, item, inventory, order, shipment, WhatsApp, and employee sync workflows.

What This Covers​

The original Word document has been split into focused API reference pages so a reader can understand each sync flow independently while still seeing how the flows connect.

Customer Sync

This document explains how retailer and shop data from your Excel file is converted and sent to the API.

Item Sync

This API is used to sync item master data, including product details, SKUs, and selling units, from an Excel file into the system. Each item may contain multiple SKUs (variants such as size and colour), and each SKU can contain multiple selling units (e.g., pair, carton).

Inventory Sync

The Third-Party Stock Sync API allows external systems (such as e-commerce platforms, inventory management tools, or middleware services) to synchronize product variant stock levels with the Mulltiply platform.

Order Processing

This API allows external platforms (such as Shopify integrations or middleware services) to send order data to the Mulltiply system for processing.

Shipment Creation

This API is used to create shipment requests in the Mulltiply system using third-party order data. Clients send order and line item details, which are mapped from third-party source data into the required API format.

Outbound Order GraphQL

Reference documentation for Outbound Order GraphQL.

Outstanding Shipment Sync

This API is used to sync outstanding shipment quantities for specific retailer, shop, and offer combinations. The data is sent in bulk and updates the outstanding quantities in the system.

Update Order Status

This API allows Tally to bulk update the status of multiple orders in the Mulltiply system. It processes an array of order status updates from Tally, with individual validation and error handling for each order.

Tally WhatsApp Send

This document explains how to send a WhatsApp template message with a PDF document from the Tally integration endpoint.

Employee Sync

Upsert (create or update) employees from a third-party system in bulk, keyed by a stable external identifier you control (syncId).

How To Read These Docs​

Each API page keeps the source document's request format, mapping tables, processing rules, nested object details, examples, response patterns, and source data checklist. Start with the page that matches the workflow you are implementing, then use the mapping and checklist sections to validate the source file or payload.