When it comes to the quality and reliability of TA, data quality and availability issues can have a significant impact. Errors, gaps, or inconsistencies in the data collection, processing, or storage systems may arise, as well as differences or discrepancies in the data formats, standards, or definitions across different platforms, providers, or exchanges. Additionally, limitations or restrictions in the data access, coverage, or frequency due to legal, regulatory, or technical reasons can be a risk factor. Manipulation or distortion of the data by malicious or fraudulent actors or events can also compromise the accuracy, completeness, and timeliness of the data that is used for TA. To prevent these issues from occurring and to ensure that the data is of high quality and availability, it is essential to verify and validate the data sources, methods, and results. This can be done by using reliable and reputable data providers that offer comprehensive services; checking and correcting any errors; comparing and reconciling the data from different sources; and detecting and avoiding any data manipulation.