Solution : https://service.sap.com/sap/support/notes/1336194 (SAP Service marketplace login required)
Key words : 
symptom code cleanup - removing, terms code cleanup, package /sapsrm/pdo_bo_po, sap note assistant, relevant support pack, commented code reason, commented code, commenting error, correction instruction, prerequisites
Related Notes : 
       
| 1266771 | SRM 7.0 Performance Guide |