ART. 1255. The debtor may cede or assign his property to his creditors in payment of his debts. This cession, unless there is stipulation to the contrary, shall only release the debtor from responsibility for the net proceeds of the thing assigned. The agreements which, on the effect of the cession, are made between the debtor and his creditors shall be governed by special laws. (1175a)

For a payment by cession to be fulfilled, the following requisites must concur:
a) there is plurality of debts;
b) there must be two or more creditors;
c) partial or relative insolvency of the debtor;
d) the assignment must involve all of debtor's properties; and
e) the cession must be accepted by creditors.
Unless a stipulation is made, the creditors do not become the owners of the ceded property and the debtor is released from his obligation only up to the net proceeds of things ceded or assigned.[2] In other words, the debtor is still liable to the creditors if there is a balance.[3]
[1] 8 Manresa 321.
[2] Article 1255, Civil Code.
[3] De Leon. (2014). Obligations and Contracts.