Solution : https://service.sap.com/sap/support/notes/508810 (SAP Service marketplace login required)
Key words :
optional iv_plan_usage importing 'x' parameter type reference type iv_plan_usage type /sapapo/plan_usage parameter default, iv_plan_usage parameter description iv_plan_usage, parameter type pass, program error solution implement, badi '/sapapo/pwb_sos', import parameter, apo source determination, task list usage, terms exit user, pp/ds reason
Related Notes :
| 449263 | User exit: Alternative sources of supply not checked in MRP |