How to use custom metadata in validation rule?
33854
Can we use custom metadata type records in validation rule in salesforce?
156673
Using entity metadata wrapper with custom entity type
96586
Has anyone, ever, successfully invoked the Metadata API from within Apex?
127526
List column (number) custom validation - whole/half values
102259
Custom Validation using Trigger throwing System.FinalException: SObject row does not allow errors
88501
Restrict Auto case-number field to specific record type
110048
How to customize the error message thrown by approval process?
95352
How do I insert records in Custom Metadata Type through Apex?
147550
How to use the "required" attribute with a "radio" input field
14204
Should we prevent meta questions from only containing required tags?
139879
Validation Rule on picklist under opportunities
116714
How to treat rare / new items in the validation of a recommender system?
88295
Custom fields not useable in Approve/Reject Approval Request
131288
form.valid() should not display validation text?
64711
XML (.xsd) feed validation against a schema
66132
Make Validation Rule bypass if TRIGGER is run?
127456
How to configure programmatically a unique constraint on several fields of a custom entity?