TV advertsRTÉ asked the Christian Solidarity Party to remove references to the citizenship referendum from their party political broadcasts.
Initial radio scripts are said to have suggested that if the referendum was carried, women in China would be forced into abortions if they were unable to come to Ireland to give birth. The references to the referendum are understood to have been removed from the party's script for its TV and radio broadcasts.
The party is running a single candidate in the European election in Dublin, Mr Barry Despard, on a pro-Life ticket.
RTÉ sources said the references had to be removed because it could not carry party political broadcasts in referendums where the stances of parties in the campaign were imbalanced, as in the current poll.
No such broadcasts could be made in this referendum because the motion is supported by Fianna Fáil and Fine Gael. Party political broadcasts would not be balanced in this instance.
Sources said there were no other issues with the script for the radio broadcast, which was recorded yesterday.
In terms of the television broadcast, which is scheduled for recording today, it is understood the party was asked to remove references to individual candidates and the positions of their parties on abortion, or the right to information about abortion, or on embryo research.
Sources said such references to individuals had to be removed because of defamation concerns. Defamation applied to individuals but not to political parties.
The Christian Solidarity Party says it is "firmly opposed to abortion" and to all experimental manipulation or exploitation of the human embryo. Mr Despard, a counsellor, is campaigning to draw attention to the potential side-effects of abortion.