Agreement has not yet been reached with religious orders on contributing towards redress for survivors of mother-and-baby homes following 16 months of negotiations.
The report of the Mother and Baby Home Commission of Investigation was published in January 2021.
Minister for Children Roderic O'Gorman said at the time that religious orders should make "a significant contribution" to redress.
His comment was backed by the Taoiseach Micheál Martin.
Today, the minister will apologise on behalf of the Government to those affected by illegal birth registrations.
Documents released to RTÉ News under Freedom of Information, show that a series of meetings on the redress scheme have taken place between Mr O'Gorman and leaders of the Catholic Church and the Church of Ireland as well as religious congregations.
However, agreement has not yet been reached.
The Government cannot compel contributions, but it is requesting orders to help pay for some of the cost of the €800 million redress scheme.
The six religious orders are the Bon Secours sisters, the Congregation of the Sacred Hearts of Jesus and Mary, Sisters of St John of God, Sisters of the Good Shepherd, Sisters of Mercy and the Daughters of Charity as well as a Catholic lay organisation, the Legion of Mary.
Last November, the Government signed off on the €800 million redress scheme for 34,000 survivors of mother-and-baby and county homes.
Records released from the Department of Children show that in the same month, each order was notified by the minister of the establishment of the Mother and Baby Institutions Payment Scheme.
Individual meetings with orders and have taken place in the following months to discuss contributions to the scheme.
A representative from the State Claims Agency also attended the meetings.
Detailed notes of the deliberations at the meetings were withheld by the department.
The issue of eliciting contributions from religious orders has proved controversial following a 2002 deal which limited the amount to €128 million.
The Residential Institutions Redress Scheme from that time has cost at least €1.25 billion.
There have been several delays to the Mother and Baby Homes scheme and the Bill providing for it is currently undergoing pre-legislative scrutiny at the Oireachtas Committee on Children.
It is hoped the legislation would then make its way through the Dáil and the Seanad.
As well as a payment, the Government is offering an enhanced medical card to acknowledge the suffering experienced by survivors of the homes.
