I have heard that to make a siyum on shas bavli one must finish shisha sidrei mishna (and all bavli that there is). Is one required to learn the entire shisha sidrei mishna as well as all of the existing talmud bavli or can one say the hadran on shas bavli with the full daf yomi masechtos?
From this site:
"This celebration is commonly referred to as the "Siyum HaShas," but technically speaking, this term is inaccurate. The word "Shas" is an acronym for the words, "Shisha Sedarim," referring to the six sections of the Mishna. The Daf Yomi program completes the entire Talmud Bavli, but the Talmud Bavli does not cover all six sections of the Mishna. For example, there is no tractate of Talmud Bavli on the section of Zera’im (with the exception of Masechet Berachot), or on most of the section of Taharot. Therefore, when reciting the "Hadran" text at the Siyum celebration, one should ensure to recite "Talmud Bavli," and not "Shas" or "Shisha Sedarim." "