Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 8 hours ago
It depends on the mistake. If the mistake was unintentional and does not involve basic obligatory acts of Salah, then Salah is valid. If write clearly what was the situation, the reply will be more clear.
Wassalam
Wassalam.