If I acquire Spanish nationality through the Sephardic process, do I have to renounce my original nationality?

In accordance with the provisions of Law 12/ 2015, no Sephardic originating in Spain shall lose their previous nationality on the occasion of the acquisition of Spanish nationality, either through the procedure provided for in the aforementioned law or through any other procedure.
However, the loss of this nationality will depend on the legislation of the country of origin, since in some cases it is provided that the acceptance of a second nationality implies the renunciation of the previous one.