Units on Mutual Funds

Hi

I need to post units received on mutual funds to the transaction.

FWZZ - needs value update (my case is only unit update)

FWK0 does not seem to be appropriate

FWZE allows unit update only with reference to value (that is to be entered in FWZZ). Value is something that is not required.

FWBE doe no allow unit update

Please advise how to handle this.

Regards

SV