error Settlement rule not created , release fail

Hi

In production system we are facing unique problem

When User try to Release Maintenance order which is created  thought notification (IW22)

its getting error Settlement rule not created , release  fail ( as Settlement rule is mandatory at time of release in config.)

But if use just create order from IW22 then  save and come back in IW32 tcode its able to release order ( settlement rule automatically added  )

any idea what may be reason for not able to release order via  IW22

Thanks

Ajay