Custom field of Multichoice type not saving to the database

Hi Team,


I've added a custom field to the List Module as a multi choice Checkbox field.i have created this field in the admin's advance settings

But problem is that, while creating or saving the items by selecting multiple items from the multi choice checkbox field in list module ,it creates below errors


There was an error deserializing the object of type Telerik.Sitefinity.Web.Services.ContentItemContext`1[[Telerik.Sitefinity.Lists.Model.ListItem, Telerik.Sitefinity.Model, Version=5.0.2523.0, Culture=neutral, PublicKeyToken=b28c218413bdf563]]. End element 'Offerings' from namespace '' expected. Found element 'item' from namespace ''.


Please suggest me how to save the multiple choice field.




Thanks in advance!!!!!!!!!!