What could this error be?

Below is the error message. I'm not sure what error is this? Please help. Thank you.

???en.unknown - sg.gov.ncss.vcfms.db.DaoException: cause - java.sql.SQLException: Error executing 'insertTrgCrsCat' in 'sg/gov/ncss/vcfms/db/sqlmaps/VfsTrgCrsCatSQL.xml'. Check the Parameter Map (or inline parameters). Check the 'volunteerFlag' property. Cause: com.ibatis.common.beans.BeansException: There is no READABLE property named 'volunteerFlag' in class 'sg.gov.ncss.vcfms.training.beans.VfsTrgCrsCatDTO' ???

What i'm using is struts and sql server 2000 as the DB.

As mentioned in a previous post to you, the ??en. usually means a mapping error. First take a look at all your mapping (xml) files.Can you include some code with this, especially your VfsTrgCrsCarSQL.xml file.

Please give some attention to the "volunteerFlag" also. As derrickD it would be nice if you show us some code also

Below is part of the codes for VfsTrgCrsCarSQL.xml.

<result-map name="vfstrgcrscat_result" class="sg.gov.ncss.vcfms.training.beans.VfsTrgCrsC atDTO">
<property name="volunteerFlag" column="vtcc_volunteer_flag"/>
</result-map>

<mapped-statement name="insertTrgCrsCat">
INSERT INTO vfs_trg_crs_cat (vtcc_volunteer_flag)
VALUES (#volunteerFlag#)
</mapped-statement>

There are other property as well but i only show the property for volunteerFlag.

So when you run the insert statement "INSERT INTO vfs_trg_crs_cat (vtcc_volunteer_flag) VALUES (#volunteerFlag#)" does the value of volunteerFlag look like a "Y" or something like that? What is the column vtcc_volunteer_flag in the database? Is it a string?
Also, is there a really a space in the name class =sg.gov.ncss.vcfms.training.beans.VfsTrgCrsCatDTO' in your mapping or is that just an artifact of copying?

volunteerFlag is a ddl where user will specify "yes" or "no". In the DB, the column name is called vtcc_volunteer_flag. The data type is char. The data recorded will be yes or no. In my mapping class, it is
class =sg.gov.ncss.vcfms.training.beans.VfsTrgCrsCatDTO'
without the space. Don't know why it just doesn't get inserted into the DB.

It is more or less a boolean then. When I have a char field in Oracle and it is a Yes/No type thing I make the field a boolean in java and in the hibernate mapping I use the org.hibernate.type.YesNoType. Here is an example of the mapping, that is Y if the person is a member and N if they are not.
In my class it is boolean so I can say if(member).

<property name="member" type="org.hibernate.type.YesNoType">
<column name="MEMBER" />
</property>