Error while creating the extended attributes..

Hello
I am trying to create extended attributes while creating a item instance, I am getting the below error
"This system has transactions greater than the passed end date (01-JAN-12).".

I am calling this below piece of code
after my create instance api completes normal, so ideally i am calling below piece only after i successfully create the item
instance through CSI_ITEM_INSTANCE_PUB.CREATE_ITEM_INSTANCE api.

Please suggest what is this error and how to get this fixed?

API I am  using

     X_EXT_ATTRIB_VALUES(1).attribute_value := 'TEST1';
    X_EXT_ATTRIB_VALUES(1).attribute_value_id := 10000;