Does Parseo work with Optimum?

Yes. Parseo connects to Optimum through its Trd web service and pushes purchase and sale invoices, and their credit notes, straight into Optimum.

Do articles have to exist in Optimum already?

Not necessarily. Lines are matched to your Optimum article codes. If Optimum doesn't have a code yet, tick "create line items" in the push dialog and Parseo creates the missing articles before the push. Lines with no code go to the default goods or service article set in the settings.

What happens if I push the same invoice twice?

Parseo deletes the document it pushed earlier and inserts the corrected one, so no duplicate appears. If Optimum won't delete the old document — for example, because the period is closed — the push stops instead of booking the invoice a second time.

Does the original document reach Optimum?

Yes. The original file is sent with the invoice and attached to the document in Optimum. You can switch this off in the settings.

How is the store chosen?

You can assign a store to every line — by a rule or by hand, from the stores pulled from your Optimum. Lines without one use the store chosen in the settings, and if none is set, Optimum uses its own default store.

Which custom fields can be filled in?

Nine: the operation (TransactionId), responsible employee, delivery terms and transport type on any invoice; employee, department and project on purchases; reference on sale invoices; and the store on each line.

Which invoices can be pushed over the API?

Purchase and sale invoices and credit notes in euros. Invoices in other currencies are not pushed over the API — Parseo tells you so at push time.

Invoices into
Optimum

Q: What do I need to connect Optimum?

Only the API key Optimum issues for your company. The connection test shows your default store and VAT accounts, so you can see that Parseo reached the right company.

The invoice arrives by email — Parseo reads the data, your rules fill in the accounting fields, and the invoice is pushed into Optimum over the API, together with the original document.

Parseo

Optimum

Sujungta

Companies from Optimum

Optimum articles

Custom fields

Invoices and credit notes

AI extracts

Optimum

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Direct API to Optimum

Parseo

Optimum

Sujungta

Companies from Optimum

Suppliers and buyers are matched by company code or VAT number

Optimum articles

Lines are matched to your Optimum article codes; missing ones can be created on push

Custom fields

Store, department, project, employee and operation

Invoices and credit notes

Purchases, sales and credit notes for both, each with its own Optimum operation

Sąskaitos kelias

AI extracts

Optimum

HowParseo + Optimum Integration Works

From supplier email to Optimum — everything happens automatically, no action needed from you

The invoice arrives by email

Every client gets their own Parseo mailbox. Suppliers send invoices straight to it — nothing to upload.

AI reads the data

Parseo extracts the supplier, totals, VAT rates and line items from a PDF, scan or photo. Works in 50+ languages.

Rules fill in the fields

Your rules assign the store to each line and the department, project and employee to the invoice. Stores, companies and articles are pulled from your own Optimum.

The invoice appears in Optimum

Parseo pushes the invoice over the API and attaches the original document. If you correct it and push again, the earlier copy in Optimum is replaced, not duplicated.

What datais transferred?

All data needed for a complete invoice entry in the accounting system

Invoice data

Supplier or buyer — company code, VAT number, name, address, country, phone, email and bank account

Number and invoice date

Line items — Optimum article code, quantity, unit price, line net amount and VAT rate

Store on every line, or your default store

VAT amounts grouped by i.SAF VAT code (PVM1, PVM2…)

Purchase and sale credit notes, pushed as Optimum returns

A link to the invoice in Parseo, in the document notes

The original document, attached to the document in Optimum

Optimum fields

Operation (TransactionId) — or a default one for sales and purchases

Responsible employee

Employee — on purchases

Department — on purchases

Project — on purchases

Reference — on sale invoices

Delivery terms

Transport type

Store — per line, from your Optimum stores

How does the technical integration work?

Parseo connects to Optimum through its Trd web service with the API key Optimum issues for your company — that is the only credential needed. The connection test shows your default store and VAT accounts, so you can see straight away that Parseo is talking to the right company.

Direct API

Correct an invoice without booking it twice

Parseo remembers which Optimum document each invoice became. When you fix an invoice and push it again, Parseo first deletes its own earlier document and then inserts the corrected one, so Optimum never holds two copies. If Optimum won't let the old document go — for example, because the period is closed — the push stops and tells you why instead of booking the invoice a second time. And when a line has an article code Optimum doesn't know yet, tick "create line items" and Parseo creates the article in Optimum before pushing; lines with no code at all go to your default goods or service article.

OptimumAPI

Direct push over the APILive

Credit notesLive

Company and article syncLive

Article creationLive

Original attachedLive

Custom fields9 fields

Do you keep control?

Yes. Before exporting to Optimum, you can always review and confirm the data. The system learns from your corrections, improving accuracy over time.

How is data security ensured?

Data transmitted via encrypted connection (SSL)

Stored on European Union servers

Compliant with GDPR requirements

Parseo has no direct influence on Optimum operations

How long does integration setup take?

Usually 15–30 minutes. No developers or additional IT infrastructure needed. You can configure the integration yourself.

Start for free

FAQ

Got questions? We have answers.

We understand — a new system raises questions. Here are honest answers to the most common concerns we hear.

You can start your first test within 15–30 minutes. Connect your email inbox, configure the integration with your accounting system, and upload your first invoices. No IT assistance or technical expertise is required.

Knowledge Center

What is invoice digitization?

Complete guide — from OCR to API connection with accounting software.

Read the guide

Other Integrations

Parseo also connects to other Lithuanian accounting software

Invoices intoOptimum

HowParseo + Optimum Integration Works

The invoice arrives by email

AI reads the data

Rules fill in the fields

The invoice appears in Optimum

What datais transferred?

Invoice data

Optimum fields

How does the technical integration work?

Correct an invoice without booking it twice

Do you keep control?

How is data security ensured?

How long does integration setup take?

Got questions? We have answers.

Other Integrations

Start using Parseo with Optimum

Invoices intoOptimum

HowParseo + Optimum Integration Works

The invoice arrives by email

AI reads the data

Rules fill in the fields

The invoice appears in Optimum

What datais transferred?

Invoice data

Optimum fields

How does the technical integration work?

Correct an invoice without booking it twice

Do you keep control?

How is data security ensured?

How long does integration setup take?

Got questions? We have answers.

Other Integrations

Start using Parseo with Optimum

Invoices into
Optimum

Invoices into
Optimum