Solution : https://service.sap.com/sap/support/notes/217416 (SAP Service marketplace login required)
Key words : 
cp /<cd_dir>/inst_31i/unix/solaris/r3up /usr/sap/put/bin, essential notes  viii/ r3up keyword  ix/   checks, p9m            year2000            wp-pi            pdb-add-, directory /usr/sap/put/bin, \usr\sap\put\bin, previously installed b2b-pro-pi, installed b2b-pro-pi 10b, directory /general/r3server/abap/note, individual upgrade phases  vi/   problems, b2b-pro-pi 10b
Related Notes : 
       
| 214503 | Release strategy for PI and PI-A add-ons | 
| 181255 | Overview: Notes about R/3 Add-Ons PI and PI-A |