understanding on vs understandings on

Some examples from the web:

• May 24, 2021 ... The current understanding on the impact of KRAS on colorectal cancer. Biomed Pharmacother. 2021 Aug;140:111717. doi: ...

Some examples from the web:

• The Council has identified the EU-Africa dialogue as being of a strategic nature and both sides acknowledge that the EU-Africa dialogue is a political process aimed at reaching common understandings on issues of mutual interest.
• The reach of understandings on victim assistance within the States Parties to the Convention will be extended, particularly in French-speaking mine-affected countries.
• The ECB also participates in the efforts of the international community to develop common understandings on a number of best practices and rules designed to make policy-making more efficient and transparent.
• Because today we are still discussing the fairly abstract structures we can also quite quickly come to agreements and understandings on matters.
• Reflects Common Understanding on delegated acts between institutions.
• If there is no understanding on these principles, there can hardly be any understanding on individual issues.
• Signatory of the Memorandum of Understanding on the 'Novorossiya union'.
• As regards crisis management, memoranda of understanding on cooperation between central banks and supervisory authorities and with Finance Ministers represent progress.
• The Paris Memorandum of Understanding on Port State Control provides a harmonised approach for those activities.
• I pay tribute to her patience and understanding on this issue.
• Conciliation might give us an opportunity to reach some understanding on these matters with the Council.
• The Commission is aware of the letter from Secretary Albright to Senator Helms regarding the understanding on investment disciplines.
• I would like sincerely to thank the Council for its understanding on this significant point.
• It demonstrates that the political will to reach an understanding on sensitive issues remains alive.
• A Memorandum of Understanding on Energy Cooperation was signed in January 2010.
• It also encouraged the facilitation of the Memorandum of Understanding on digital access for persons with disabilities.
• The Commission received the final version of this understanding on 13.10.04.
• Paragraph (a) above does not apply to the export of goods and services covered by the Sector Understanding on Export Credits for Civil Aircraft or the Sector Understanding on Export Credits for Ships.
• But we feel that something else is needed; greater understanding on China's part of the European Union's commercial position on the reciprocal opening of the markets.
• Text in accordance with the Common Understanding on practical arrangements for the use of delegated acts.