# I have two tryton installations. How to sync stock moves between them
**URL:** https://discuss.tryton.org/t/i-have-two-tryton-installations-how-to-sync-stock-moves-between-them/8223
**Category:** Developer
**Tags:** stock
**Created:** [January 23, 2025, 7:18am UTC](https://discuss.tryton.org/t/i-have-two-tryton-installations-how-to-sync-stock-moves-between-them/8223 "2025-01-23T07:18:06Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@AsifAnwar](https://discuss.tryton.org/u/AsifAnwar)
#### Post date: [January 23, 2025, 7:18am UTC](https://discuss.tryton.org/t/i-have-two-tryton-installations-how-to-sync-stock-moves-between-them/8223/1 "2025-01-23T07:18:06Z")
Problem statement:
I have two tryton separate installations. Facility 1 and facility 2. How to sync stock moves between them.
Scenario:
Stock is purchased at one facility 1 and issued to facility 2.
Facility 1 outbound: Issuance recorded in the facility 1 to be synched in facility 2, as inbound shipment.
Facility 1 Inbound: Consumption from facility 2 to be synched in facility 1.
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### Author:  [@ced](https://discuss.tryton.org/u/ced)
#### Post date: [January 23, 2025, 11:29am UTC](https://discuss.tryton.org/t/i-have-two-tryton-installations-how-to-sync-stock-moves-between-them/8223/2 "2025-01-23T11:29:22Z")
What are you calling “Facility”? Is it companies?
- If it is companies, Tryton does not have automatic EDI between instances.
- If it is not companies, why have you 2 instances?
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### Author:  [@AsifAnwar](https://discuss.tryton.org/u/AsifAnwar)
#### Post date: [January 25, 2025, 11:51am UTC](https://discuss.tryton.org/t/i-have-two-tryton-installations-how-to-sync-stock-moves-between-them/8223/3 "2025-01-25T11:51:52Z")
Actually, there are multiple child locations and one parent location, all have their own instances as separate companies. Because of central purchasing, parent location issues out stock to the child location which are defined as a sub store in their own instance, and want to record consumption of that child location when they utilize the stock.
Secondly, how to update stock quantity at parent company when child company sends in their current stock report
Kind of complicated.
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### Author:  [@ced](https://discuss.tryton.org/u/ced)
#### Post date: [January 25, 2025, 12:25pm UTC](https://discuss.tryton.org/t/i-have-two-tryton-installations-how-to-sync-stock-moves-between-them/8223/4 "2025-01-25T12:25:02Z")
So why are the instances separate companies and separate databases?
This sounds like an over-complication for no benefit.