Solution : https://service.sap.com/sap/support/notes/379274 (SAP Service marketplace login required)
Key words :
reference field cdhdr-planchngnrand proposal 'zzzzzzzzzzzz', terms bp_planned_changes reason, development class$tmp, function module bus_pcdpos_get, import parameter 'i_planchngnr_to', function module bus_pcdhdr_get, selection parameter 'maximum, selection parameter p_maxact, changing module bus_pcdpos_get, insert text 'maximum
Related Notes :
| 496748 | BUSPCDACT: No restriction of the records to be activated |
| 432524 | Performance BUSPCDACT |
| 384709 | CD: Timeout when reading planned changes |
| 384691 | CD: Timeout when reading planned changes |
| 374653 | CD: Time out when reading scheduled changes |