Insert Adapter Service

For an already existing insert adapter service, when i try to add a new field by clicking the insert row button, i am getting the following error [ART.114.205] Adapter Runtime (Metadata): Unable to lookup the resource domain values.
on update.inputColumn [Ljava.lang.String;@b9371e

java.lang.Exception: Adapter values are not available

After which i am unable to add the field to the adapter service.

Thanks in advance.

Hi Yathindra,

please reload the metadata first.

If you open the service, there are 2 buttons above the configuration tabs.
Reload is the second one.