Validation rules and error messages

The validation process verifies that all the required fields in the UI are populated. Else, this message is displayed:

This field is required.

This table list the error messages displayed for various validation failures:

Field	Validation Condition	Error Message
Name	Checks if the value is unique.	Cannot save Validation rule {0} because the name already exists.
Name	Checks if populated.	Cannot save Validation rule {0}, Name is not specified.
Enabled	Checks for possible values.	Validation rule "{0}" has an incorrect Enabled flag. Valid values are true or false.
System	Checks for possible values.	Validation rule "{0}" has an incorrect System flag. Valid values are true or false.
Record Source	Checks for possible values.	Cannot save Validation rule {0}, Record Source {1} is invalid. Possible values are ("Hold", “Reject”, “Warning”).
Type	Checks for possible values when the target table is inbox table.	Cannot save Validation rule {0}, Type {1} is invalid. Possible values are (“CONSTANT”, “EXPRESSION”, “LOV”, “NOTNULL”, “REFERENCE”, “UNIQUE”, “CHILDREN”, “USERDATA”).
Type	Checks for possible values when the target table is user data table.	Cannot save Validation rule {0}, Type {1} is invalid. Possible values are (“CONSTANT”, “EXPRESSION”, “LOV”, “NOTNULL”, “REFERENCE”, “UNIQUE”, “CHILDREN”).
Column	Checks if a column is valid for the specified table.	Cannot Save validation rule {0}, Column {1} cannot be found in Table {2}.
Column	Checks if populated, where Type = 'NOTNULL'	Cannot Save validation rule {0}, Column is required for type = Not Null.
Condition	Checks that the logical (SQL) expression on the specified table is valid.	Cannot save Validation rule {0}, Condition {1} cannot be resolved. It must be a valid SQL expression on the specified Table.
Constant value	Checks if populated, where Type = Constant.	Cannot Save validation rule {0}, Constant Value is required for type = Constant.
Expression	Checks if populated, where Type = Expression.	Cannot save Validation rule {0}, Expression is not specified.
Expression	Checks that the logical (SQL) expression on the specified table is valid.	Cannot save Validation rule {0}, Expression {1} cannot be resolved. It must be a valid SQL expression on the specified Table.
List of Values Name	Checks if populated, where Type = List of Values.	Cannot Save validation rule {0}, List of Values Name is required for Type = List of Values.
List of Values Name	Checks that the value is valid.	Cannot Save validation rule {0}, List of Values Name {1} cannot be found.
Reference Constraint	Checks if populated, where Type = Reference.	Cannot save Validation rule {0}, Reference Constraint is required for Type = {1}.
Reference Constraint	Checks if a parent is populated, where Parent Reference = Y.	Cannot save Validation rule {0}, Reference Constraint must be Parent reference = {1}.
Reference Constraint	Checks that the value is valid and must be an active (Enabled = TRUE) Constraint in SCV.	Cannot save Validation rule {0}, Reference Constraint {1} cannot be found.
Children Constraint	Checks if populated, where Type = Children.	Cannot save Validation rule {0}, Child Reference Constraint is required for Type = {1}.
Children Constraint	Checks if a parent is populated, where Parent Reference = Y.	Cannot save Validation rule {0}, Child Reference Constraint must be Parent reference = {1}.
Children Constraint	Checks that the value is valid and must be an active (Enabled = TRUE) Constraint in SCV.	Cannot save Validation rule {0}, Child Reference Constraint {1} cannot be found.
Unique Constraint	Checks if populated, where type = Unique.	Cannot save Validation rule {0}, Unique Constraint is required for type = Unique.
Unique Constraint	Checks if populated, where type = User Data.	Cannot save Validation rule {0}, Unique Constraint is required for type = User Data.
Unique Constraint	Checks that the value is valid and must be an active (Enabled = TRUE) Constraint in SCV.	Cannot save Validation rule {0}, Unique Constraint {1} cannot be found.