Solution : https://service.sap.com/sap/support/notes/321121 (SAP Service marketplace login required)
Key words :
directory ~ftp/general/r3server/abap/note, executing program zddtadir start program zddtadir, additional key words pcs, import program zddtadir, made transport ss7k900056, source system sap, program zddtadir, note prior, transport data, pcs delivers
Related Notes :
319353 | Protecting Z objects from a PCS before an upgrade |