?.. failed in obtaining = falhou em obter / didnt get = não consegui... well... sometimes they demand literal translations. Next time they run away from it... :S

"The federal agent did not obtain the necessary information." was accepted as a translation (21/11/2013)

i agree, as it's written, i see it as "the federal agent was not able the necessary information" obviously not right...

"information" in English hardly ever has its form in plural, just in few contexts, but in Portuguese it has plural most of he time, unless it is required a specific information.