Inappropriate schedule of vaccine; This non-serious case was reported by a pharmacist via call center representative and described the occurrence of incomplete course of vaccination in a adult female patient who received Herpes zoster (Shingrix) for prophylaxis. Previously administered products included Shingrix (first dose of Shingrix about 2.5 years ago). On an unknown date, the patient did not receive the 2nd dose of Shingrix. On an unknown date, an unknown time after receiving Shingrix, the patient experienced incomplete course of vaccination (Verbatim: Inappropriate schedule of vaccine). The outcome of the incomplete course of vaccination was unknown. Additional Information: GSK Receipt Date: 06-JAN-2025 Till the time of reporting the patient had not received the second dose of Shingrix, which led to incomplete course of vaccination. The reporter asked what were the recommendations as to if she should receive her second dose since it’s way outside of the 2 to 6 month window. The reporter consented to follow up.