The powers granted may be exercised including in the case of a conflict of interests or of a mutual contract between the ... and ....

It doesn't make sense to refer to self- when two persons are meant. I think it's a situation of 'I'll contract you and you'll contract me'.

'Self-contracted' frequently has the meaning 'self-emploiyed', 'autonomo'.

Check these off against your context and you'll be able to decide.


Las facultades apoderadas se podrán ejercitar inclusive en el supuesto de colisión de intereses o autocontratación entre mandante y mandatario.