"Not possible to determine shipping point for item 00010" when creating PO with BAPI_PO_CREATE1

Hello, I'm trying to create a PO with BAPI_PO_CREATE1, but I get the return error message "Not possible to determine shipping point for item 00010".

If I do the same thing in ME23N (ie. create a PO with the same data as I give to the parameters of BAPI_PO_CREATE1), the shipping tab (including shipping point) is created once I fill in the Supplying Storage Location (RESLO) on item level, but for some reason BAPI_PO_CREATE1 can't do the same thing. I've also tried to fill the parameters POSHIPPING, POSHIPPINGX and POSHIPPINGEXP but, it gives the same result.

Any ideas would be much appreciated.