It is critical to understand the law in Turkey. According to the Turkish Civil Code:
Thus, when you request a “Diyanet exclusive Dini Nikah Belgesi,” the authorized imam will first verify your civil marriage certificate (Nikah İlmühaberi).
Even though it lacks civil power, the PDF is essential for:
Solution: This means the PDF is either a fake or was never uploaded to the central system. Diyanet has cracked down on "street imams" who perform unregistered Nikah. You must redo the ceremony at an authorized mosque to get a valid QR-coded PDF.