Solution : https://service.sap.com/sap/support/notes/138212 (SAP Service marketplace login required)
Summary : 
      This SAP Note provides comprehensive details regarding the "D&B for SAP R/3" add-on, addressing implementation strategies, installation, upgrades, and available patches across various versions from V1.1 to V5.1 of the add-on. Key highlights include specific notes for releases, upgrade processes, conflict resolution, and support packages for different R/3 versions. It emphasizes that this overview pertains exclusively to the D&B for SAP R/3 add-on, outlining essential steps ranging from initial setup to advanced upgrades, accompanied by specific note references for detailed guidance.
Key words : 
hot packages/legal change patches hr conflict resolution transports, installation upgrade hot packages/lcps, /3 versions 40b till ecc 6, release strategy release strategy, support packages patches, 1the tentative date, sapk transports, 1i                  375574 delta upgrade, 1i                  639927 delta upgrade, symptom overview note
Related Notes : 
       
| 639927 | Enhancements to install./delta upgrade PDB-ADD-ON 310_31I | 
| 377809 | Additional info on upgrade with PDB-ADD-ON V2.1 to 4.0B-4.6C | 
| 302101 | Additions to the R/3 upgrade to 46B with PDB ADD-ON 120_46B | 
| 300224 | Additional information about installing PDB-ADD-ON 120_46B | 
| 166127 | |
| 162999 | Additions for installation of PDB-ADD-ON 120 (31H-45B) | 
| 145738 | |
| 143456 | |
| 141434 | |
| 138215 | CRTs for PDB-IF ("D&B for SAP R/3" interface) | 
| 138213 | Release strategy for PDB Add-On "D&B for SAP R/3" | 
| 132739 | Additions to the installation of PDB-IF (31H-40B) |