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KMK91KMK91 

Standard validation rule

Hi,

Can we change stanard validation rule in salesforce.

Thanks
KMK
Best Answer chosen by KMK91
VinayVinay (Salesforce Developers) 

You can check steps mentioned below to Prevent duplicate email addresses from being created.

https://help.salesforce.com/s/articleView?id=000328734&type=1

Also you can use Duplicate rules in salesforce.

https://help.salesforce.com/s/articleView?id=sf.duplicate_rules_map_of_reference.htm&type=5

Please mark as Best Answer if above information was helpful.

Thanks,

All Answers

VinayVinay (Salesforce Developers) 
Hi KMK,

You cannot change standard validation rules, however you can write custom validation rule and make similar conditions to trigger custom validation message.

Please mark as Best Answer if above information was helpful.

Thanks,
KMK91KMK91
Thank you Vinay.

please share me if you have validation rule like duplicate email address found in more than one contact when creating new contact or edit .

Error Msg: Another contact has email address.
VinayVinay (Salesforce Developers) 

You can check steps mentioned below to Prevent duplicate email addresses from being created.

https://help.salesforce.com/s/articleView?id=000328734&type=1

Also you can use Duplicate rules in salesforce.

https://help.salesforce.com/s/articleView?id=sf.duplicate_rules_map_of_reference.htm&type=5

Please mark as Best Answer if above information was helpful.

Thanks,

This was selected as the best answer