"The work of the commission will start as soon as possible and will have as its goal to prepare a proposal of reform of the matrimonial process, with the objective of simplifying its procedure, making it more streamlined, and safeguarding the principle of the indissolubility of matrimony," said a Vatican statement Sept. 20.

The new body's work will address what Pope Francis has identified as a key challenge in the "pastoral care of marriage."

"There is the legal problem of marriage nullity, this has to be reviewed, because ecclesiastical tribunals are not sufficient for this," the pope told reporters in July 2013.

Pope Francis related the problem of annulments to the situation of divorced and civilly remarried Catholics, whose predicament he said exemplifies a general need for mercy in the church today.

According to church teaching, such Catholics may not receive Communion unless they obtain an annulment of their first, sacramental, marriage or abstain from sexual relations, living with their new partners as "brother and sister."

A proposal to allow some divorced and civilly remarried Catholics to receive Communion without meeting either of those conditions, introduced by German Cardinal Walter Kasper at a meeting of the world's cardinals in February, is expected to be one of the most discussed issues at the two-week synod on the family, which opens Oct. 5.

The new commission on the annulment process, which Pope Francis established Aug. 27, has 10 members, including Cardinal Francesco Coccopalmerio, president of the Pontifical Council for Legislative Texts, and Archbishop Luis Ladaria Ferrer, secretary of the Congregation for the Doctrine of the Faith.