Message in Japanese (日本語)
DataServiceCollection での '<var>X</var>' 操作中に NULL 値は許可されません。
Unlocalized message
Null values are disallowed during '<var>X</var>' operations on DataServiceCollection.
Search by GoogleDataServiceCollection での '<var>X</var>' 操作中に NULL 値は許可されません。
Null values are disallowed during '<var>X</var>' operations on DataServiceCollection.
Search by Google