Work Breakdown Structure, Edges (Hierarchy Pointer) — the linked-list structure that encodes the WBS hierarchy for a project: for every WBS element (POSNR) it records its parent project (PSPHI) plus its superior element (UP), first subordinate (DOWN), and left/right sibling pointers within the tree. PRPS carries the WBS element as a flat master-data row with a level number (STUFE) but does not itself encode traversal order; PRHI is the table SAP's hierarchy-walk function modules (e.g. GET_PROJECT_HIERARCHY) actually read to reconstruct parent/child/sibling order. Every UP/DOWN/LEFT/RIGHT pointer resolves back to a PSPNR on PRPS, and PSPHI resolves to PROJ — so PRHI is pure structure, carrying no descriptive or financial attributes of its own.
Hover a canonical name to see the legacy SAP field name
| Canonical name | Concept | Description | Data element | Type | Check table |
|---|---|---|---|---|---|
| CLI key | cliens | Client | MANDT | CLNT 3 | T000 |
| EOP key | elementum operis | WBS Element | PS_POSNR | NUMC 8 | PRPS |
| NUM_PRP | numerus propositum | Current number of the appropriate project | PS_PSPHI | NUMC 8 | PROJ |
| NUM_EOP | numerus elementum operis | Number of the superior WBS element | PS_PHIUP | NUMC 8 | PRPS |
| NUM_EOP2 | numerus elementum operis | Number of the 1st subordinate WBS element | PS_PHIDO | NUMC 8 | PRPS |
| NUM_MNU | numerus munus | Number of the left adjacent position in the WBS | PS_PHILE | NUMC 8 | PRPS |
| NUM_MNU2 | numerus munus | Number of the right adjacent position in the WBS | PS_PHIRI | NUMC 8 | PRPS |
Foreign keys
| Field | Check table | Check field |
|---|---|---|
POSNR | PRPS | PSPNR |
PSPHI | PROJ | PSPNR |
UP | PRPS | PSPNR |
DOWN | PRPS | PSPNR |
LEFT | PRPS | PSPNR |
RIGHT | PRPS | PSPNR |