In Turkey, restriction codes are often applied by authorities to regulate entry, exit, residence, or other administrative matters concerning foreigners. Below is a general list of commonly used restriction codes and their meanings:
Ç Restriction Codes
- Ç-101: Visa, visa exemption, residence, or work permit violation (3-month entry ban)
 - Ç-102: Visa, visa exemption, residence, or work permit violation (6-month entry ban)
 - Ç-103: Visa, visa exemption, residence, or work permit violation (1-year entry ban)
 - Ç-104: Visa, visa exemption, residence, or work permit violation (2-year entry ban)
 - Ç-105: Visa, visa exemption, residence, or work permit violation (5-year entry ban)
 - Ç-113: Individuals who entered or exited the country illegally
 - Ç-114: Foreign nationals subject to legal proceedings
 - Ç-115: Foreign nationals released from prison
 - Ç-116: Foreign nationals earning their livelihood through illegitimate means
 - Ç-117: Illegal workers
 - Ç-118: Carriers of contagious diseases posing a threat to public health
 - Ç-119: Non-payment of fines by illegal workers
 - Ç-120: Non-payment of fines due to visa or residence violations
 - Ç-135: Violation of the Foreigners and International Protection Law
 - Ç-136: Non-payment of travel expenses
 - Ç-137: Foreign nationals invited to leave the country
 - Ç-138: Recalcitrant passengers
 - Ç-141: Individuals deemed a threat to international security
 - Ç-149: Individuals deemed a threat to public security
 - Ç-150: Attempting to enter the country with forged documents
 - Ç-151: Human smugglers/traffickers
 - Ç-152: Foreign nationals provisionally banned from entering the country
 - Ç-166: Foreign nationals without justified reasons or financial means for entry
 - Ç-167: 1-month entry ban for those violating visa, residence, or work permit rules for 3 to 6 months
 - Ç-179: Organ/tissue trafficking
 
G Restriction Codes
- G-26: Activities of illegal organizations
 - G-34: Counterfeiting
 - G-42: Drug-related crimes
 - G-43: Smuggling crimes
 - G-48: Facilitating or arranging prostitution
 - G-58: Homicide crimes
 - G-64: Threats
 - G-65: Theft
 - G-66: Robbery
 - G-67: Fraud
 - G-78: Foreign nationals carrying contagious diseases
 - G-82: Activities against national security
 - G-87: Individuals posing a threat to public security
 - G-89: Individuals identified as foreign terrorist fighters
 
K Restriction Codes (Wanted for Smuggling)
M Restriction Codes
- M-67: Interpol fraud
 
N Restriction Codes
- N-67: Fraud code
 - N-82: Forgery code
 - N-95: Fine for violating the entry ban
 - N-96: Administrative fine for failure to leave the country within the allowed period
 - N-97: Administrative fine for address notification violations
 - N-99: Interpol code
 - N-119: Administrative fine for unauthorized employment
 - N-120: Administrative fine for visa, residence, or work permit violations
 - N-135: Administrative fine for illegal entry or attempt
 - N-136: Deportation travel expenses
 - N-168: Administrative fine for violating Clause C of Article 102
 - N-169: Administrative fine for non-compliance with obligations set by the ministry
 - N-170: Administrative fines under the Misdemeanor Law or related laws
 - N-171: Administrative fines for non-fulfillment of specified obligations
 - N-172: Travel expenses for voluntary return
 
O Restriction Codes
- O-100: Foreign nationals voluntarily withdrawing from international protection applications/unknown location prohibited from re-entering the country
 - O-176: Foreign nationals with rejected international protection claims (3-year entry ban)
 - O-177: Foreign nationals with rejected international protection claims (5-year entry ban)
 
V Restriction Codes
- V-68: Residence permit subject to ministry approval
 - V-69: Canceled residence permits
 - V-70: Sham marriages
 - V-71: Foreign nationals failing to report address changes or providing false statements
 - V-74: Foreign nationals whose departure must be reported to ministries/governorships
 - V-77: Applicants falsely claiming to be Ahiska Turks
 - V-84: Entry granted with the condition of obtaining a residence permit within 10 days
 - V-87: Voluntary returnees under temporary protection
 - V-88: Foreign nationals with invalidated work permits
 - V-89: Foreign nationals readmitted to the country
 - V-91: Temporary protection foreign nationals requiring permission to leave the country
 - V-92: Duplicate registrations under temporary protection
 - V-137: Foreign nationals invited to leave the country
 - V-144: Released under Article 57-A
 - V-145: Voluntary return
 - V-146: Turkish passport flagged
 - V-147: Spouse of a Turkish citizen with a flagged passport
 - V-148: Residents of temporary accommodation centers
 - V-153: Constitutional Court measures for a third country
 - V-154: Appeals to administrative courts against deportation decisions
 - V-155: European Court of Human Rights injunction
 - V-156: Attorney representation fees
 - V-157: Rejected residence permit applications
 - V-158: Revoked ID cards of foreign mission personnel/family members
 - V-159: Foreign nationals entering Turkey for transit to a third country
 
t is possible to remove certain codes determined through the system with legal support from a lawyer, based on the evaluation of their justifications. This process is carried out in accordance with the current legislation and relevant legal procedures.