Intercompany attachment approval

Hi All,

I am in process of defining approval rules for Intercompany. Requirement is that to have a attachment rule. if there is no attachment at Batch level, it should auto reject. i defined the below rule and it is working for Transaction level and not Batch level

Rule;

Task.payload.Add Attachment Status.toUpperCase() isn't "SUCCESS"

Kindly help me, if you know how we can achieve this for Batch level attachment