The ruling on supplicating after the first tashahhud due to forgetfulness

A message was received by the program from a sister in Allah: (L. R. 'A) from Riyadh. She sent a number of questions, among which was a question that says: What is obligatory for one who supplicates after the first tashahhud of the fourth rak'ah due to forgetfulness?
Answer: He owes nothing. If he supplicates, he owes nothing. The recommended practice (sunnah) is that the supplication be in the final tashahhud. So if he supplicates in the first tashahhud, he owes nothing. Yes.