Solution : https://service.sap.com/sap/support/notes/490654 (SAP Service marketplace login required)
Key words :
field/-structure reference type default i_initiator char40 imp, short text i_initiator 'x' 'x' initiator save, parameter optional reference i_initiator 'x' save, creation indicator 'a' - 'sap apo', i_initiator type char40 param, enter type group 'mmpur', enter function module 'me_requisition_ext', type group 'mmpur', 'type group' option, planned delivery time
Related Notes :
442501 | Changing planned delivery time in purchase requisition |
441622 | Supplying-plant-dependent planned del. time/trans. time |