Sinn Féin's 2020 election expenses statement to the Standards in Public Office Commission will have to be corrected again after the party found further errors in its returns.
Two invoices with sterling values of £4,800 and £800 were sent by the party to SIPO in 2020, but the euro value should have been returned.
This means the party under declared its election expenses for 2020 by €945.
A party spokesperson said: "This was an administrative error that should not have happened.
"It will be corrected and returned to SIPO.
"Both invoices were paid by the party in the south, at the following rates: Offline Central: €5601.25 and HotPress Sound: €943.96."
This will be the fourth time Sinn Féin has returned its 2020 election expenses to SIPO.
Separately, Sinn Féin has decided it will not table a no confidence motion in Minister for Public Expenditure Paschal Donohoe next week.
Instead the party will bring a motion to the Dáil on the Child and Adolescent Mental Health Services.
"In respect of Paschal Donohoe, it is clear that he has many more questions to answer relating to his political donations. He has claimed that it was Fine Gael that received prohibited political donations, and not him. This is not credible," a spokesperson said.
"These are very serious issues and SIPO is now investigating him. We trust this process will conclude speedily and the matter will undoubtedly be discussed again in the Dáil when this investigation has concluded."
It follows a second Dáil statement given by Minister Donohoe on Tuesday, in relation to election expenses.
In his statement, he confirmed that there was a breach of election rules after Fine Gael in Dublin Central "unknowingly" received a corporate donation above the legal limit in 2020.
On 18 January, the minister gave a statement in relation to issues surrounding his declaration in respect of the 2016 General Election campaign.