Here is a stab at it…..HCSBS "mirror" SBSCH?
The Small Business Superannuation Clearing House (SBSCH) is a free service you can use to make Super Guarantee (SG) contributions. Eligible businesses are those with 19 or fewer employees or an annual aggregated turnover of less than $10 million.
https://www.ato.gov.au/Business/Super-for-employers/Paying-super-contributions/Small-Business-Superannuation-Clearing-House/
Countries that have a tax treaty with Australia (Mexico is on the list).
https://www.ato.gov.au/forms/guide-to-foreign-income-tax-offset-rules-2016/?page=6