Customer Card

The extension on the customer card provides three main features: entering and validating the OIB number, automatically fetching company data from the Croatian Court Register, and validating VAT numbers via the EU VIES system.

---

OIB Field

A new identifier has been added to the customer card:

Field	Description	Note
OIB	Croatian personal/company identification number (11 digits)	Automatically validated when entered

Where is it?

The OIB field is located on the customer card, in the general information section.

How to enter an OIB?

1. Open a customer card (Customers > select a customer).
2. Enter the 11-digit OIB in the OIB field.
3. Press Tab or leave the field — the system automatically checks whether the OIB is valid.

Invalid OIB

If you enter an OIB that fails the checksum validation, the system will display:

"OIB (XXXXXXXXXXX) is not valid. Please enter a valid OIB."

Check the number and try again.

Where to find an OIB?

A company's OIB can be found in the Croatian Court Register at sudreg.pravosudje.hr or on official company documents (contracts, invoices, registration certificates).

---

Court Register Synchronization

The Sud-Reg Sinkronizacija button automatically fills in company details by fetching data from the Croatian Court Register (Sudski registar).

What gets filled in automatically?

Field	Source
Name	Short company name from the Court Register
Address	Registered office street and house number
City	Registered office city/settlement
Post Code	Looked up automatically based on address
E-Mail	First email address from the register (if available)
VAT Registration No.	OIB prefixed with HR (e.g. HR12345678901)
Country/Region Code	Always set to CROATIA

How to use it?

1. On the customer card, enter the OIB (the field must be filled in).
2. In the ribbon, click the Sud-Reg Sinkronizacija button (in the Process group).
3. The system fetches data from the Court Register and automatically fills in the fields.
4. When complete, the message "Company data successfully fetched and updated." is shown.

Before synchronizing

The OIB field must be filled in and valid. If it is empty, the system displays:

"Please enter OIB before fetching company data."

Which name is imported?

The system imports the short company name (skraćena tvrtka). If no short name is available in the register, the full name is used instead.

Post Code

The post code is looked up automatically based on the address. If it cannot be found (e.g. for unusual addresses), the field will remain empty — enter it manually.

What to do after synchronization?

Review the filled-in fields and correct or supplement as needed (e.g. phone number, contact person). All imported data can be edited manually.

---

VAT ID Validation

The Provjera PDV ID-a button checks whether a customer's VAT registration number is valid and active in the EU VIES system (VAT Information Exchange System).

Availability

This feature is only available on the Customer Card. It is not available on the Vendor Card.

How to use it?

1. On the customer card, confirm that the VAT Registration No. field is filled in.
2. In the ribbon, click the Provjera PDV ID-a button (in the Process group).
3. The system queries the EU VIES system and shows the result:
   • "VAT number is valid according to VIES system." — the VAT number is active.
   • "VAT number is not valid according to VIES system." — the VAT number is not active or not found in VIES.

VAT number format

The VAT number must include the country code as the first two letters (e.g. HR12345678901 for Croatia, DE123456789 for Germany). If the field does not contain the country code, validation will not work correctly.

About VIES

VIES is an EU system for verifying VAT numbers registered in EU member states. Validation is performed in real time — an internet connection is required.

---

Common errors

Error	Cause	Solution
"OIB (XXX) is not valid."	OIB entered has an incorrect check digit or contains letters	Check the OIB and enter the correct 11-digit number
"Please enter OIB before fetching company data."	The OIB field is empty when clicking Synchronize	Enter the OIB first, then run synchronization
"Please enter VAT number before validation."	The VAT Registration No. field is empty	Enter the VAT number (including country prefix)
"Failed to connect to Court Register API."	No internet connection or the service is unavailable	Check your internet connection and try again later
"Failed to connect to VIES API."	No internet connection or EU VIES service is unavailable	Check your internet connection and try again later
Post Code remains empty	Address not recognized by the geocoding service	Enter the post code manually