Former prime minister Manmohan Singh and former finance minister P Chidambaram are not among the signatories to the impeachment motion notice against Chief Justice of India Dipak Misra.
The Congress, however, downplayed it saying the party did not want to involve its senior leaders in the issue.
The impeachment notice has been signed by 64 Rajya Sabha members from seven political parties, besides seven MPs who have since retired.
Congress leaders Ghulam Nabi Azad and Kapil Sibal rejected insinuations that there was a "division" within the Congress over the issue and there was no consensus among the opposition parties.
Azad said there are parties which have signed and there are parties which have not and were not available, "but all are supporting".
On the issue whether consensus eluded the opposition parties on the issue, Sibal said "there is consensus".
To a question about reports that Manmohan Singh was reportedly opposed to the decision, Sibal that "this is absolutely false. This is not true at all. From the very beginning, this is a very serious issue."
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