Value helps (valid codes)

Many fields (transaction types, document types, banks…) accept only codes from a value help. The field’s description flags when a value help exists. Read the value-help entity set to list valid codes before setting the field:

from abstra.connectors import run_connection_action

run_connection_action(
    connection_name="my_sap",
    action_name="odata/<service>_list_<value_help_entity_set>",
    params={"$filter": "<KEY> eq '<value>'", "$top": 20},
)

__count = 0 is not an error

A value-help (or billability) lookup returning __count = 0 / no rows means no data matches your filter — e.g. a purchase order that is not yet billable. That is data, not a connector failure.