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19:11 Aug 11, 2004
Spanish to English translations [PRO] Medical: Pharmaceuticals
Explanation: SRI = Servicios de Rentas Internas Aut = Autorización
Autorización de Servicios de Rentas Internas
I also happen to be translating a Medical Invoice/Receipt from Ecuador and had the same question.
The link below is to a FAQ page. The first question deals with Autorizaciones SRI.
As far as I can tell, SRI is Ecuador's version of the US IRS. The number that follows AUT. SRI. is authorization number that indicates that the Entity has been authorized to collect taxes on the service or product sold to the customer.