1. What the IDs Mean | Term | What it is | Where it’s used | |------|------------|-----------------| | User ID | A numeric (or alphanumeric) identifier that ties a specific installation of Guitar Pro 6 to a registered user. It is generated when you first activate the software. | Appears in the Help → About window, in the activation dialog, and in the email you receive after purchase. | | Key ID (often called License Key or Product Key ) | A string of characters (e.g., XXXX‑XXXX‑XXXX‑XXXX ) that proves you own a legitimate copy. It unlocks the full feature set. | Entered during the first‑time activation or when re‑activating after a hardware change. Usually supplied in the confirmation e‑mail or on the purchase receipt. |