Here's what this requirement entails:

To study in the UK under the Tier 4 (General) student visa route, you indeed need to fulfill certain requirements, and having an unconditional offer of a place on a course with a licensed Tier 4 sponsor is one of them.

1. Unconditional Offer: You must have received an unconditional offer of a place on a course from a recognized education provider (university, college, or other institution) in the UK. This means that you have met all the academic and other conditions required for admission to the course, such as English language proficiency requirements or academic qualifications.
2. Licensed Tier 4 Sponsor: The education provider offering you a place on the course must hold a valid Tier 4 sponsor license issued by the UK Visas and Immigration (UKVI). The list of licensed Tier 4 sponsors is available on the UK government's website, and you should ensure that the institution you intend to study at is on this list.

Once you have received an unconditional offer from a licensed Tier 4 sponsor, you can use this offer to apply for a Tier 4 (General) student visa to study in the UK.
It's important to note that the Tier 4 visa requirements may vary depending on factors such as your country of residence and the level of the course you intend to study. Additionally, there may be additional requirements related to finances, English language proficiency, and other aspects of your application. Therefore, it's recommended to carefully review the official guidance provided by the UK government and consult with the institution you plan to study at for specific advice tailored to your situation.