CWWIM1028E The value of mandatory property 'prop_name' is missing.
Explanation
The operation cannot be performed because the value of the mandatory property is missing.
For example, RDN property is not specified during entity create, or
propertyName or entityTypeName is missing from PropertyDefinitionControl or ExtensionPropertyDefinitionControl, or
entityName is missing from entitySchema.
Programmer response
Provide a value for the mandatory property.