The Provisions related to the solidary obligation are between the Art.162-168 (CO.). This regulation includes the legal nature, characteristics and consequences of solidary obligation. The solidary obligation is one of the most common kind of indebtedness in practice. This particular relationship arises from the will of the parties or from the law. There are some problems that this kind of indebtedness can reveal in all bases. The Code of Obligations no 6098 have a wide range of provisions about this topic, but in practice there are some issues to be discussed between creditors and the debtors. In the study, the relationship between the creditor and the solidary obligator is examined. The issues related to this subject are critiqued in relation with the doctrine and the court decisions.