First , they criticized HIPC 's definition of debt sustainability , arguing that the debt - to - export and debt - to - government - revenues criteria were arbitrary and too restrictive .
Critics soon began to attack HIPC 's scope and its structure .
First , Critics criticized HIPC 's definition of debt sustainability , arguing that the debt - to - export and debt - to - government - revenues criteria were arbitrary and too restrictive .
Critics soon began to attack HIPC 's scope and its structure .