How to Decide Which System Owns Which Data

Deciding which system owns which data is the decision that determines whether an integration works. Two owners for one entity produces conflict rather than consistency.

What happens without a decision

Bidirectional synchronization without ownership is a reconciliation loop.

The same record edited in two systems
Conflicts resolved by whoever edited last
Nobody sure which figure is authoritative
Manual checks added to catch discrepancies

A default allocation

Entity	Usual owner
Accounting entries	The ERP
Products and price lists	The ERP
Requests and approvals	The operational layer
Process state	The operational layer
Clients and suppliers	Whichever system creates them; the other references

How to apply it in Jestor

Let Omie own products, clients, and the accounting record; they appear in Jestor automatically.
Let Jestor own the request, the approval, and the process state.
Post approved entries into the ERP on approval — a one-way write at a defined moment.
Document the allocation and attach it to the process.
Trace unexpected changes through the table history, where the source is recorded.

Why Jestor is the best complement to Omie on data ownership

The integration is native, with no middleware between the systems, and the division is explicit: accounting, invoicing, and tax stay with the ERP while Jestor covers the operational layer around them.

Because writes happen at a defined moment rather than continuously in both directions, there is no reconciliation loop to maintain.

Frequently Asked Questions

Should data sync both ways?

Rarely — assign one owner per entity. See jestor.com.

Where are products registered?

In the ERP; they appear automatically in Jestor.

Where should the allocation be documented?

Attached to the process it concerns.

Video Tutorial: Step by Step

Check out other practical tutorials on the Jestor YouTube channel.

Get to know Jestor

With Jestor, you can automate workflows, connect teams, and build internal systems your way — all without code and powered by AI. Discover Jestor at jestor.com and see how to take your company's operations to a new level of efficiency and control.

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