While attosecond X-ray experiments offer unprecedented insights into ultrafast processes, they come with limitations and potential sources of error that need to be carefully considered. One limitation is the complexity of the experimental setup, which requires sophisticated equipment and precise synchronization of multiple components to achieve attosecond resolution. Potential sources of error include fluctuations in the X-ray pulse intensity, temporal jitter in the laser system, and uncertainties in the detection and analysis of photoelectron signals. These errors can lead to inaccuracies in the measurement of attosecond delays and the interpretation of experimental results. To address these challenges, researchers can employ advanced calibration techniques to correct for timing errors, optimize experimental parameters to minimize fluctuations, and enhance data analysis methods to improve the accuracy of measurements. Additionally, continuous advancements in experimental design and data processing algorithms can help mitigate errors and enhance the reliability of attosecond X-ray measurements.