Moving from 1С/BAS to OneBox

Move the sales side from 1С/BAS to OneBox in stages: clients, contacts and open orders go across while the team keeps working

Many Ukrainian companies keep clients and orders in 1С/BAS simply because it was always there. The program is on the official prohibited software list, and the team wants the sales side in a modern system. OneBox is a Ukrainian CRM with ready apps for telephony, messengers, banks, cash registers, delivery and marketplaces. We move the sales side there in stages: we look at what is really in 1С/BAS, clean out duplicates, make a trial load and let both systems run side by side until the figures match. Accounting and tax reporting are a separate question: a CRM does not replace them, and your accountant chooses where they go. Below: what we carry over, how the move goes and which OneBox capabilities we rely on.

Request an integration System page: 1С/BAS →System page: OneBox →

What we move

1С/BAS → OneBoxCounterparties from 1С/BAS — companies and individuals with tax code, addresses and phones — become OneBox clients; duplicates are merged before the load.
1С/BAS → OneBoxContact people become contacts linked to their company, so the manager knows whom to call.
1С/BAS → OneBoxCustomer orders that are not yet closed move to OneBox in the form your OneBox is set up with, so they are finished there rather than in 1С/BAS.
1С/BAS → OneBoxPayments on those open orders move with them as information, so the manager sees what the client has already paid.
1С/BAS → OneBoxSales history by client for the period you choose is carried over as reference, so the manager sees what the client bought before.

How the move goes

First we check with you that data exchange can be switched on: in OneBox it is a separate app, and it needs one more user on a cloud plan or one more licence key on the boxed version.
We look at what is really in your 1С/BAS: which catalogues and documents sales use, what is outdated; together we decide what moves to OneBox and what stays in the archive or goes to the accounting program.
Before the move we clean the data: merge duplicate counterparties, fix phones and names, and mark old records the CRM does not need.
We make a trial load of a small part of the data, and your managers check clients and open orders on familiar examples before the full load.
For the transition both systems run in parallel: new sales go into OneBox, and 1С/BAS stays at hand as a reference, so the team keeps selling.
We reconcile clients and open orders in OneBox against 1С/BAS on the same date; every difference is explained before the next step.
Only after that is the sales side of 1С/BAS switched off; the accounting part stays until your accountant moves to their new program, and the old database is kept as an archive.

Automation scenarios

One client, several cards

Before the same client sits in 1С/BAS under several spellings, and managers argue whose client it is.

After duplicates are merged before the move, and in OneBox the client has one card with the whole history.

Managers wait for the operator

Before to see what a client bought or which of his orders are still open, a manager asks the person who works in 1С/BAS.

After the client, his open sales and his history are in OneBox, and the manager sees them himself.

Afraid to switch

Before the move is postponed, because nobody knows what happens to orders in progress on the day of the switch.

After open orders move to OneBox, both systems run side by side, and sales go on as usual.

How it works technically

For those who want to check: each point links to the official documentation page it comes from.

BAS products are on Ukraine's official list of prohibited software (Cabinet resolution №1335 of 22.10.2025, based on Presidential Decree №601/2024 of 02.09.2024). The direct ban applies to the state sector, critical infrastructure and systems processing state information resources.
Source: impactalaw.com ↗ checked 2026-09-25
According to the same documentation, the platform automatically builds a REST interface using the OData protocol, through which outside systems can read, change, create and delete data over HTTP.
Source: its.bas-soft.eu ↗ checked 2026-09-25
OneBox OS has a public JSON REST API (version 2) for developers, installed as a separate app inside the system.
Source: 1b.app ↗ checked 2026-09-25
API v2 can manage all entities in OneBox and build any data sample; access is protected with temporary tokens.
Source: 1b.app ↗ checked 2026-09-25
Using the API requires an extra licensed session: one more user on a cloud plan, or one more license key on the boxed version.
Source: 1b.app ↗ checked 2026-09-25

Limits

The limits come from both systems. Data exchange in OneBox is not switched on by default: it is a separate app that needs one extra user on a cloud plan or one extra licence key on the boxed version, so we check this with you before the start. Access works with temporary keys, which are renewed during a long load. The OneBox documentation we rely on does not describe a ready import of a 1С/BAS database, so the data is exported from 1С/BAS through its open exchange interface, prepared and loaded step by step. OneBox is a CRM: accounting and tax reporting from 1С/BAS do not move into it and need a separate accounting program chosen with your accountant. 1С/BAS is on the official prohibited software list: we do not take projects for state bodies, critical infrastructure or systems with state data, and with private businesses we discuss the risk openly.

How to start

Three steps from a first message to work on your project.

01
Leave a request
Describe the task in the form — in text or by voice. Budget and timing are optional.
02
We review and estimate
A developer studies the brief, asks about anything unclear and sends an estimate.
03
We start
Once scope and price are agreed, the work begins.

Leave a request

or write to info@coreviaflow.space

Live project We built and run Gemalli — a B2B export platform with producer pages, a CRM and a deal chat. Read the case →

Questions

Is it legal to stay on 1С/BAS?

1С/BAS is on the official prohibited software list. The direct ban covers the state sector, critical infrastructure and systems with state data. For a private business it is formally allowed but considered a risk — check with your lawyer.

Will sales stop during the move?

No. For the transition both systems run in parallel: new sales go into OneBox, and 1С/BAS stays as a reference until the reconciliation shows the same figures.

What about accounting?

OneBox does not keep the books. Sales move to the CRM, and accounting and tax reporting move to a separate accounting program that your accountant chooses; we agree the boundary at the audit.

What has to be switched on in OneBox?

The data exchange app. It needs one more user on a cloud plan or one more licence key on the boxed version; we check this with you at the first step, before any loading.