Title: Orders Synchronization for Merit Aktiva Author: freelancermartin Published: April 20, 2025 Last modified: June 27, 2026 --- Search plugins ![](https://ps.w.org/synchronization-merit-aktiva/assets/banner-772x250.jpg?rev= 3330195) ![](https://ps.w.org/synchronization-merit-aktiva/assets/icon-128x128.png?rev=3330195) # Orders Synchronization for Merit Aktiva By [freelancermartin](https://profiles.wordpress.org/freelancermartin/) [Download](https://downloads.wordpress.org/plugin/synchronization-merit-aktiva.1.2.3.zip) * [Details](https://wordpress.org/plugins/synchronization-merit-aktiva/#description) * [Reviews](https://wordpress.org/plugins/synchronization-merit-aktiva/#reviews) * [Installation](https://wordpress.org/plugins/synchronization-merit-aktiva/#installation) * [Development](https://wordpress.org/plugins/synchronization-merit-aktiva/#developers) [Support](https://wordpress.org/support/plugin/synchronization-merit-aktiva/) ## Description This plugin synchronizes WooCommerce orders with Merit Aktiva accounting software. A sales invoice is automatically created in Merit Aktiva for every new paid order— no manual work required. Requires at least the Merit PRO package. ### Features * Automatic invoice creation in Merit Aktiva for every new WooCommerce order (cron, every 5 minutes) * Manual synchronization from the admin panel * Estonian banking reference number generation (7-3-1 algorithm) with configurable prefix * B2B support: company name, Estonian business registry code (validated) and VAT number at checkout * B2C support: private customer name and contact details * Payment method mapping (WooCommerce payment method Merit Aktiva payment code) * Automatic credit invoice when an order is fully refunded * Invoice PDF download directly from Merit Aktiva within the WC order view * Invoice reconciliation: detect discrepancies between WC and Merit Aktiva * Sync history log with pagination * API connection test in settings * Settings export and import (JSON) * WooCommerce HPOS (High-Performance Order Storage) support * Toast notifications for sync results (top-right corner, disappear after 5s) ### External Services This plugin connects to the Merit Aktiva API v2 (aktiva.merit.ee). Data transmitted: * API authentication (ApiId, timestamp, HMAC-SHA256 signature)* Invoice data: customer name, address, email, phone number * Product codes, descriptions, quantities, prices, VAT * Reference number (Estonian 7-3-1 standard), invoice number, payment due date Data is transmitted every time an invoice is sent (automatically or manually). Service provider: Merit Aktiva (merit.ee) Terms of Service: https://www.merit.ee/ wp-content/uploads/2024/12/merit-software-terms-of-use-2024.pdf Privacy Policy: https://www.merit.ee/wp-content/uploads/2024/12/privacy-statement-2024.pdf ### Requirements * WordPress 6.7 or newer * WooCommerce 8.6 or newer * PHP 8.0 or newer * Merit Aktiva account with API access (PRO package or higher) ### Configuration **API Settings:** * API ID and API Key — from your Merit Aktiva account * Reference number prefix — prepended to the reference number (digits only) * Payment deadline in days * Contact person — displayed on the invoice **Payment Method Mapping:** Link WooCommerce payment methods to Merit Aktiva payment codes (e.g. “Bank Transfer” “T”). **Business customers at checkout:** Customers can check “I am a company”, enter a business registry code and VAT number. The registry code is validated using the Estonian business registry algorithm (mod-11). ### Usage Orders are synchronized automatically every 5 minutes. For manual sync: * All orders: Merit Aktiva Sync Settings “Sync all orders” * Single order: WooCommerce Orders open order “Send invoice to Merit Aktiva” ### Support Email: freelancermartin1@gmail.com Website: https://freelancermartin.com/et ## Screenshots [[ [[ [[ [[ ## Installation 1. Download the plugin ZIP file 2. Go to WordPress admin Plugins Add New Upload Plugin select the ZIP 3. Activate the plugin 4. Go to Merit Aktiva Sync Settings 5. Enter your Merit Aktiva API ID and API Key (found in Merit Aktiva Settings Integrations) 6. Save and test the API connection ## Reviews There are no reviews for this plugin. ## Contributors & Developers “Orders Synchronization for Merit Aktiva” is open source software. The following people have contributed to this plugin. Contributors * [ freelancermartin ](https://profiles.wordpress.org/freelancermartin/) [Translate “Orders Synchronization for Merit Aktiva” into your language.](https://translate.wordpress.org/projects/wp-plugins/synchronization-merit-aktiva) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/synchronization-merit-aktiva/), check out the [SVN repository](https://plugins.svn.wordpress.org/synchronization-merit-aktiva/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/synchronization-merit-aktiva/) by [RSS](https://plugins.trac.wordpress.org/log/synchronization-merit-aktiva/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.2.3 * Fix: RoundingAmount calculation now includes VAT (TaxAmount) per line so the comparison against the gross WooCommerce order total is correct when prices are stored excluding tax #### 1.2.2 * Fix: invoice amount mismatch error resolved by sending Merit API RoundingAmount field — corrects 0.01–0.02 floating-point rounding differences between WooCommerce order total and sum of individual line items #### 1.2.1 * Fix: myplugin/ field prefix renamed to merit-aktiva/ with automatic database migration * Fix: text domain corrected to synchronization-merit-aktiva #### 1.2.0 * Toast notifications for sync results (red/green, top-right corner, disappears after 5s) * Fix: incorrect NotTDCustomer value for B2C customers (false true) * Fix: trim whitespace from customer name #### 1.1.5 * Configurable reference number prefix in settings * Fix: RefNo now generated using 7-3-1 algorithm (Merit API requirement) * Payment method mapping moved into general settings #### 1.1.0 * Redux-style admin UI (dark sidebar, cards) * Sync history log with pagination (15 entries per page) * Automatic API test after saving settings * Settings export and import * Invoice reconciliation between Merit Aktiva and WooCommerce #### 1.0.0 * Initial release * WooCommerce order export to Merit Aktiva * Automatic cron synchronization ## Meta * Version **1.2.3** * Last updated **13 hours ago** * Active installations **10+** * WordPress version ** 6.7 or higher ** * Tested up to **7.0** * PHP version ** 8.0 or higher ** * Tags * [Accounting](https://wordpress.org/plugins/tags/accounting/)[estonia](https://wordpress.org/plugins/tags/estonia/) [invoicing](https://wordpress.org/plugins/tags/invoicing/)[woocommerce](https://wordpress.org/plugins/tags/woocommerce/) * [Advanced View](https://wordpress.org/plugins/synchronization-merit-aktiva/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/synchronization-merit-aktiva/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/synchronization-merit-aktiva/reviews/) ## Contributors * [ freelancermartin ](https://profiles.wordpress.org/freelancermartin/) ## Support Issues resolved in last two months: 0 out of 1 [View support forum](https://wordpress.org/support/plugin/synchronization-merit-aktiva/) ## Donate Would you like to support the advancement of this plugin? [ Donate to this plugin ](https://freelancermartin.com/et)