Final answer:
A licensee must notify TDLR within a time frame that is commonly 30 days based on standard practices for updating personal details in similar scenarios, though the exact time frame should be confirmed with TDLR's specific regulations.
Step-by-step explanation:
When a licensee experiences a name or address change, it is required to notify TDLR within a specific time frame. According to the information given, this time frame is not explicitly stated in the provided text. Therefore, based on the principle of ensuring accurate licensing records and considering the standard practices in other states for similar notifications, a cautious and professional suggestion would be 30 days. In many cases such as voter registration and DMV records, updating personal information within 30 days is common, which allows for timely processing and accuracy in records. However, for an exact number of days, one should refer to the rules and regulations of the Texas Department of Licensing and Regulation, or TDLR. This ensures compliance with the specific requirements of the jurisdiction in question.