certificaban
Imperfect ellos/ellas/ustedes conjugation of certificar.

certificar

La fiabilidad de los datos era a veces dudosa, porque los gastos no siempre se certificaban y verificaban debidamente y, en algunos casos, los informes financieros se basaban en estimaciones e hipótesis.
Data reliability was sometimes questionable because expenditures were not always properly certified and verified, and in some instances financial reports were based on estimates and assumptions.
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