Tauzeeh ul Masail

[Inaayah]

Salam!

I would like to know, is it's necessary for a Marja to have a Tauzeeh ul Masail? 

Also, someone told me that Ayatullah Khamenei does not have his own Tauzeeh, hence he cannot be a Marja.

These are not my words, It's just something I've heard. I would like to know if this piece of information is credible enough to be held true.

[Sumerian]

I think by saying tawdheeh al-masa'il, they meant a risala. And it is not a condition for ijtihad.