Validation failed for one or more entities, See EntityValidationErrors property for more details

      To rectifiy this error, I had opened the EntityValidationError property above the Message property and in that System.Data.Entity.Validation.DbEntityValidationResult And in that ErrorValidations and in that ErrorMessage, the error message will display as below :

According to this error message I alter my database column datatype size from 50 to 100 and also update the model from database of Entity in edmx file