Are there any scrips that can't be sold under ATST ?

Are there any scrips that can't be sold under ATST ?

I bought sun pharma advanced yesterday, and it was up and wanted to sell it today, when i went to ATST projections, there was no radio button under square off.

I called my broker, then they said that few scrips cannot be sold in ATST.

If it's true , where to know all possible scrips that can't be sold in ATST ?

Thanks