How to Find Out If You Are on the SIS Blacklist Before Crossing the Border: A Guide
You can check a record in SIS before you travel — everyone has a legal right to request their own data, and depending on which country entered the record, you must apply either to the Office for Foreigners or to the Polish police.
International Law Firm "Zahist" assists clients with issues related to entry bans. In our practice, most people learn about a SIS record only at the border — although this information can and should be checked in advance, especially before an important trip.
We explain what SIS is, where to submit a verification request, and what to do if the record turns out to be incorrect.
What SIS is and why you should check a record in advance
SIS (Schengen Information System) is a shared database of the Schengen Area countries used to enter records on entry bans, wanted persons, and other grounds for border restrictions.
A record in the system affects the entire Schengen Area at once — a ban entered by one country usually means refusal of entry across all participating states, not only the one that entered the record.
That is why checking in advance makes sense: if a record exists, learning about it at home is far better than being refused entry at the border during your trip.
Information known in advance gives you time to seek legal assistance and gather documents for a challenge or cancellation, rather than resolving everything on the spot while waiting in line at the checkpoint.
Which records may concern a foreign national
The most common reason for a third-country national is a previous refusal of entry or a return decision, after which an entry ban for a set period is entered automatically.
Less often there are technical errors: incorrectly entered data, confusion due to a match of name and date of birth with another person, or an outdated record that should have been deleted after its validity period ended.
A separate category is records linked to lost or stolen documents: if a lost passport appears in the database as invalid, this can also create a problem at the border even if there are no claims against the person themselves.
Whom to contact — it depends on who entered the record
A SIS check starts with determining which country likely entered the record — this decides which authority you should apply to.
If the record was made by Poland — the Office for Foreigners (UDSC)
If the ground for the restriction arose in Poland — for example, after a Border Guard decision refusing entry — the request is submitted to the Head of the Office for Foreigners (UDSC) using a special form from their website.
In the request you must state your full name, date and place of birth, and address — without these data it is impossible to identify the person in the system.
The form can be sent by post to the authority’s address — a personal visit is usually not required, which is convenient for those outside Poland at the time of the application.
If the record was made by another EU country — the Polish police
When the record may have been entered by another Schengen Area member, UDSC is not competent to provide such information — the request must be submitted to the International Police Cooperation Bureau of the National Police Headquarters.
This is a key difference from a request concerning your own Polish records: the procedure and the authority differ, although the substance of the right of access to data is the same.
If it is unknown which country may have entered the record, you may apply to the competent authority of any Schengen state — under the general access rule it does not have to be the same country that entered the data.
| Who likely entered the record | Where to apply | Response time |
| Poland | Head of UDSC | Up to several weeks |
| Another Schengen country | International Police Cooperation Bureau | Up to 60 days |
How to submit a verification request
- Identify the country that may have entered the record (based on previous trips or refusals)
- Complete the relevant request form — on the UDSC website or an application to the police
- Provide full identification data: name, date and place of birth, address
- Send the request by post or submit it in person and wait for a written reply
The right of access to your own data applies regardless of which Schengen country you apply to — it is a general principle of personal data protection, not a privilege only for EU citizens.
A reply from the Polish police should arrive within 60 days — this is the official time limit set for considering such applications, although in practice the period sometimes depends on the workload of the particular unit.
If no reply is received within the set time limit, that in itself is grounds for a complaint to the supervisory authority — the authority’s silence does not relieve it of the duty to respond.
What to do if the record turns out to be incorrect
An entry ban or any other SIS record can be challenged if the data are incomplete, outdated, or entered without sufficient legal grounds.
Correction or deletion of data
Together with the access request you may immediately submit a demand to correct inaccurate data or fully delete the record if there are no longer lawful grounds for it.
If the authority responsible for the record refuses to correct or delete it, you have the right to lodge a complaint with the President of the Personal Data Protection Office (UODO) as the supervisory authority.
UODO has acted as an independent supervisory authority since 25 May 2018 — that is where you should turn when the competent authority does not respond to a correction request or ignores the set response deadlines.
A complaint to UODO does not replace an application to the authority that holds the record; it complements it — it is an additional lever of pressure, not an alternative path to resolving the issue.
Lifting an entry ban — a separate procedure
If the entry ban was entered lawfully, but the period for which it was imposed has expired or circumstances have changed, a separate cancellation procedure applies — it is not limited to correcting a technical error.
An application to lift the ban is considered by the authority that issued the original decision, so for Polish bans this means applying to the Border Guard, not only a request for access to data.
In practice it is advisable first to establish the exact duration of the ban through an access request, and only then decide whether it makes sense to apply for early cancellation — sometimes it is simpler to wait for the natural expiry of the period.
Legal assistance with a SIS check
Determining where to submit the request, properly drafting the application, and assessing the chances of lifting the ban are tasks where a formal mistake means months of waiting lost.
Lawyers at International Law Firm "Zahist" help prepare a SIS verification request, challenge an incorrect record, and support the procedure for lifting an entry ban.
We also help identify which country likely entered the record when this is not obvious from the circumstances — this saves time and avoids applying to the wrong address.
If you are planning an important trip and want to check in advance whether there are any restrictions, contact International Law Firm "Zahist" — we will review your situation at a consultation.
An early approach gives the most time to correct the situation before the travel date — that is why a check should be planned well before buying tickets, not at the last moment.
