Description: X-Error refers to the errors that occur during quantum calculations, a phenomenon that can affect the accuracy and reliability of the results obtained in quantum computers. In the context of quantum computing, qubits, which are the basic units of quantum information, are extremely susceptible to external interference and decoherence, which can cause calculations to deviate from expected results. These errors can arise from various sources, such as fluctuations in the environment, errors in qubit manipulation, or problems in measuring quantum states. Identifying and correcting X-Errors is crucial for developing efficient quantum algorithms and building scalable quantum computers. As technology advances, quantum error correction techniques are being developed to mitigate these issues, allowing quantum systems to operate more reliably and effectively. Understanding X-Error is fundamental for researchers and developers in the field of quantum computing, as its impact can determine the success of practical applications in various fields such as cryptography, material simulation, and optimization of complex processes.