Please note down all the important table name of Production Planning (PP)

Work center
CRHH   - Work center hierarchy
CRHS   -  Hierarchy structure
CRHD   -  Work center header
CRTX    -  Text for the Work Center or Production Resource/Tool
CRCO   -  Assignment of Work Center to Cost Center
KAKO  -  Capacity Header Segment
CRCA   -  Work Center Capacity Allocation
TC24     -  Person responsible for the work center

Routings/operations
MAPL    -  Allocation of task lists to materials
PLAS     -   Task list - selection of operations/activities
PLFH     -   Task list - production resources/tools
PLFL      -   Task list - sequences
PLKO    -   Task list - header
PLKZ     -   Task list: main header
PLPH     -   Phases / suboperations
PLPO     -   Task list operation / activity
PLPR     -    Log collector for tasklists
PLMZ    -   Allocation of BOM - items to operations

Bill of material
STKO    -   BOM - header
STPO     -   BOM - item
STAS     -   BOMs - Item Selection
STPN     -   BOMs - follow-up control
STPU     -   BOM - sub-item
STZU     -   Permanent BOM data
PLMZ    -   Allocation of BOM - items to operations
MAST    -   Material to BOM link
KDST     -  Sales order to BOM link

Production orders
AUFK     -  Production order headers
AFIH       -  Maintenance order header
AUFM     -  Goods movement for prod. order
AFKO     -  Order header data PP orders
AFPO      -  Order item
RESB       -  Order componenten 
AFVC      -  Order operations
AFVV      -  Quantities/dates/values in the operation
AFVU      -  User fields of the operation
AFFL       -  Work order sequence
AFFH       -  PRT assignment data for the work order(routing)
JSTO        -  Status profile
JEST         - Object status
AFRU       - Order completion confirmations

PRT’s production orders
AFFH       -  PRT assignment data for the work order
CRVD_A  -  Link of PRT to Document
DRAW      -  Document Info Record
TDWA      -  Document Types
TDWD      -  Data Carrier/Network Nodes
TDWE       -  Data Carrier Type

Planned orders
PLAF         -  Planned orders

KANBAN
PKPS         -  Kanban identification, control cycle
PKHD        -  Kanban control cycle (header data)
PKER         -  Error log for Kanban containers

Reservations
RESB         -  Material reservations
RKPF        -   Header

Capacity planning
KBKO       -   Header record for capacity requirements
KBED        -   Capacity requirements records
KBEZ         -  Add. data for table KBED (for indiv. capacities/splits)

Planned independent requirements
PBIM         -   Independent requirements for material
PBED         -  Independent requirement data
PBHI          -  Independent requirement history
PBIV          -  Independent requirement index
PBIC          -  Independent requirement index for customer req.

Read Also:
SAP PP Configuration Tcodes

SAP PP Reference Books:
SAP Production Planning , Configuration, Interview Questions and Certification, Books

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