I have applied for L1 blanket visa and appeared for the interview on 5th July 2017 at U.S. Consulate General Chennai office.
I have cleared the interview and the visa officer said that my visa is approved and gave me two copies of I-129S with an approved stamp, and took my passport.
However, when I collected my passport from VFS Ahmedabad dropbox today, attached to it was a blue sheet of paper that says 'Your Blanket L-1 application is not clearly approvable under section 8 CFR 214.2(l)(ii)(D) and INA 101(a)(15)(L).'
Since the visa officer returned I-129s with an approved stamp, why wasn't my passport also stamped? Do I need to submit any missing documents, or was there an issue with my application?