On May 8 2020, the United Nations Office to the African Union (UNOAU) supported the signing of an Memorandum of Understanding (MoU) between MINUSCA and MOUACA, which specifies the procedures for deployment, safety and security, and logistical support for activities assigned by the AUPSC.

Throughout the process, UNOAU provided a key facilitation role between the two missions and between the UN Headquarters and AU, providing technical expertise to both parties. The MoU is considered a milestone achievement, which will bolster UN-AU's future partnership in the accomplishment of designated mandates in the Central African Republic (CAR).

The AUPSC at its  848^th meeting welcomed the Commission's actions on the deployment and operationalization of the Joint Special Security Units (USMS) and the Military Observers Mission. It is also mandated to coordinate and operationalize support from the MINUSCA in the CAR through close involvement of the UNOAU.

The USMS mixed units, comprising of members from the armed group combatants and the Central African Republic’s forces, were one of the significant security structures established by the 2019 Peace Accord. These units were to be transitional in nature (24 months of deployment), composed of 60 percent rebel and 40 percent government soldiers (in total just under 2,000 participants), with the aims of establishing trust, protection, strengthening public order, and securing seasonal migration corridors.