A mandatory property or argument is missing or you have to set a valid expression.
Set the corresponding property or argument to a suitable value or associate an Expression to the element displayed in the TrueChange result.
You deleted an entity, but an existing element in your application (e. g.: a widget or variable) still uses it.
Double-click on the error line to take you directly to the missing property and change it.
The URL Path property in a REST API method doesn't have any value.
Set the URL Path property of the REST API method to a valid URL.
Set a valid expression for the attribute <attribute>.
You added an inline record, but you did not specified the mandatory attribute.
You added an inline record, but the value you entered for the attribute is invalid.
Double-click on the error line to take you directly to the missing property.