Add a new field in ISSUE CURRENT ITEM dialog and capturing the data in the MATUSETRANS table using automation script.
if owner and owner.getRecordMboName()=="INVENTORY": issueitemMbo=owner.getMboSet("ISSUECURRENTITEM").getMbo(0) if issueitemMbo: mbo.setValue("MATUSETRANScustomaFieldName", issueitemMbo.getString("ISSUECURRENTITEMcustomFieldName"))
Thanks to SASHULL