Error while updating Install Base Item Instance through API

Hello
When I am updating the existing IB item instance, I am getting the below error message.

" Specified location attributes are ambiguous and do not specify a valid location. Please provide valid location attributes. "

I am passing below two parameters when calling update API 'CSI_ITEM_INSTANCE_PUB.UPDATE_ITEM_INSTANCE'

        X_INSTANCE_REC.LOCATION_TYPE_CODE        := 'HZ_PARTY_SITES';--'HZ_LOCATIONS';
        X_INSTANCE_REC.LOCATION_ID            := hz_party_sites.party_site_id

As per the metalink note ID 561040.1, even i tried by passing the location_id from hz_party_sites but still the same error.
But the same is working when i am running create API ' CSI_ITEM_INSTANCE_PUB.CREATE_ITEM_INSTANC;.