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 Rules
The last tab in the side panel corresponds to the validation rules associated with the form.

Rules
It is possible to define validation rules associated with the form.
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Validation  | 
 
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 Shows syntax examples for writing the rules.
Operations
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Saves the new or modified rule  | 
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Cancels the operation  | 
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Edits the existing rule  | 
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Deletes the rule  | 
Validations with Advanced Rules
If a validation with an advanced rule needs to be incorporated, an existing rule must be selected from the drop-down list and press 
 to add the rule to the grid. It can be selected using the options "Create", "Modify" and "Delete" when the validation is executed, either when creating a form instance, modifying it or deleting it. Through this icon 
 you can unlink the rule from the grid.