English to Turkish Other Law: Taxation & Customs take ...data as a base on

Orijinali İspanyolca ama açıklamasını ingilizce vermişler ben tam olarak ne çıkaramadım. Crédito litigioso, as you say, is a credit in legal dispute. This can also be expressed in Spanish as "crédito bajo contencioso/en contencioso" (provided that it's at Court). Therefore you could say contentious or credit under contentious (and contentious-administrative IF (sic) it involves an action taken against, or challenging the rights of the central administration/judicial review)