Check duplicates by custom field

[oraculo1]

Yes, upgrade problems was only a comment. About check duplicates in minor versions, thre's a topic https://forum.espocrm.com/forum/general/569-duplic...

[oraculo1]

Yes, but when i try to update from 6.1, upgrades without problems since 7.3.4. From 7.3.4 to 7.4.x gives error 500 and a lo tof troubles

[oraculo1]

Hi victor,

I haven't last options. Is version 6.1...

[oraculo1]

Hi,
I've added a field named CIF in contact entity. The idea is that i need when one contact is created with, per example, CIF A00000000, if another...