will take at least 2 ube's I believe. one for F4101 and one for F4102
oracle doc: E1: 41: How to Create Item Master and Item Branch Plant Records Using Interoperability (R4101Z1I/P4101Z1/F4101/F4102/F4101Z1) (Doc ID 625451.1)
For each item in the F4101Z1 set the TNAC = A and ITBR = 1 for item master creation. Then add the same record and set ITBR = 2 to create an Item Branch record.