SAP and ABAP Free Tutorials
Main SAP PA Tcodes (Personal Administration Transaction Codes)

Here the list of the most important SAP PA Transaction Codes ( Personal Administration SAP PA Tcodes) in SAP HCM (PA-PA sub-module) . 

SAP PA Tcodes

find the list of the most used Transaction codes for PA-PA ( Personal Administration )

P1OATransaction for Transfer Settings for Opt.Archiving
P3PRTransaction for 3PR Reconciliation Workbench
PA00Initial PA Master Data Menu
PA04Transaction for Maintain PA Number Ranges
PA10Transaction for Personnel File
PA20Transaction for Display HR Master Data
PA30Maintain HR Master Data : Maintenance T500C
PA40Transaction for Personnel Actions Authorization main switch
PA41Change Entry/Leaving Date
PA42Fast Entry for Actions
PA48Hiring from External System
PA70Fast Entry
PAAHTransaction for Call Ad-Hoc Query
PAL1Transaction for Create Sales Representative
PAL2Display Sales Representative
PAL3Transaction for Maintain Sales Representative
PAL4Create Buyer
PAL5Maintain Buyer
PAL6Display Buyer
PAR1Flexible Employee Data
PAR2Employee List
PAT1Personnel Administration Info System
PAW1Who is who call SM30 subobjects individually

Find also The 3 ways to Mass Update Contacts of Customer in SAP

Others SAP HR Tcodes

Others than SAP PA Tcdoes, here a list of some main (none PA) SAP PA transaction codes to consider also:

HR00HR Report Selection
HROBJCustomizing HR
HROMTcodes for Organizational Management reports
O037HR Customizing User Parameters
OE00HR Customizing
OG00Tcodes for Personnel Administration Customizing
OG01Personnel Administration Customizing Features
OG30Transaction for HR
OG42Tcodes for Customizing Tool for PA42
OH00Transaction for Access Subset View
OOACTransaction for HR
OOFFTcodes for Passport photo
OOIFTransaction for HR
PC00_M99_U510Transaction for Pay scale increase International
PE03Tcodes for HR
PM01Enhance Infotypes
PM03Maintain Number Range Features
PU00Tcodes for Delete Personnel Data
PU03Transaction for Change Payroll Status
PU22Transaction for HR Archiving
PU23Tcodes for SARA Parameters Set For PA_CALC
PU24SARA Parameters Set For PA_TIME
PU25SARA Parameters Set For PA_TRAVEL
PUIT_UITcodes for Test for ITF Conversion Classes
PULTTransport HR Tables for Logistics

You may want to check List of Important SAP PA Tables (Personal Administration)

SAP Transaction Codes for IMG in HR

For Customizing Transaction code in HCM, you may consider the following list

Here an alternative to nagivate through SPRO menu

S_AHR_61011427Transaction for IMG Activity Switch for IBAN Functionality
S_AHR_61011436Transaction for IMG Activity
S_AHR_61011488Tcodes for IMG Activity
S_PH0_48000106Transaction for Complete Deletion of Pers. Numbers
S_PH0_48000108Transaction for Activate Features
S_PH0_48000450Tcodes for Date Monitoring OHIX0068
S_PH0_48000510Transaction for Ad Hoc Query OHIX0026
S_PH9_46000156Transaction for Bankverbindungen OHIX0008

You can download a PDF version of this table here.