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Chandu017Chandu017 

validation rules for Attachment object

Hi,
I have created the record in custom object in the related list nots and attachments i need to attach only one attachment not more than one.Can anybody Suggest how to achieve this either validation rule or trigger.
Balaji BondarBalaji Bondar
Hi Ramachandra,

You have to write a trigger(before insert) on trigger object to make sure only one attachment against that object.
Please refer below code to see how you can write a trigger with your custom logic:
https://help.salesforce.com/HTViewSolution?id=000181538

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