How to update one table from another table?

Question

Hi,
Please go through the case I am mentioning below and if possible try to provide with a solution.
I am working on a report to generate cash flow forecast, where in one of the fields is "Payroll", in which its being mentioned as:
In the selection screen: I am entering Project ID, profit Center and Period(in MM/YYYY format).
Selection of all entries in table COSP for selected cost elements above, value type 1, version , all periods and for all selected WBS elements and all objects underneath.
From this, update table COFP with information from COSP with value type 62 and same period.
For updation of various fields the following information is being given.
How should we update COFP?
New entries per OBJNR/PERIO and HKONT are required via using the information from COSP:
COFP-MANDT              =          SY-MANDT
COFP-KOKRS              =          if COSP-OBJNR begins with ‘PR’
                                               Check table PRPS with COSP-OBJNR = PRPS-OBJNR and enter PRPS-PKOKR
                                                If COSP-OBJNR begins with ‘NV’
                                               Check table AFVC with COSP-OBJNR = AFVC-OBJNR,
go to Table AFKO with AFVC-AUFPL,
go to table AUFK with AFKO-AUFNR and enter AUFK-KOKRS
If COSP-OBJNR begins with ‘OR’
Check table AUFK with COSP-OBJNR = AUFK-OBJNR
and enter AUFK-KOKRS
COFP-BELNR               =          Check table NRIV, CLIENT = SY-MANDT, OBJECT = RK_BELEG,
SUBOBJECT = COFP-KOKRS, NRRANGENR = ‘05’,
Add 1 to NRLEVEL and begin with 500000000
Use same BELNR for one update-run
COFP-BUZEI                =          ‘1’ + and 1 in next entry but same update-run
COFP-TWAER              =          COSP-TWAER
COFP-ZHLDT                =          always last day of month in field COFP-PERIO
COFP-GJAHR               =          COSP-GJAHR
COFP-PERIO               =          if entry in field WKG001 à PERIO = 001
                                               If entry in field WKG006 à PERIO = 006……
COFP-WRTTP              =          ‘62’
COFP-VRGNG              =          ‘FIPL’
COFP-POSIT                =          Check table SKB1 where SAKNR = COSP-KSTAR and use SKB1-FIPOS
                                               for going to table FMCI-FIPOS and enter FMCI-POSIT
COFP-OBJNR               =          COSP-OBJNR
COFP-HKONT              =          COSP-KSTAR
COFP-WKGBTR           =          WKGXXX
COFP-WKGBTRO         =          -
COFP-WTGBTR            =          WTGXXX
COFP-WTGBTRO         =          -
COFP-WOGBTR           =          WTGXXX
COFP-WOGBTRO        =          -
COFP-BUKRS1            =          -
COFP-GJAHR1             =          -
COFP-BELNR1             =          -
COFP-BUZEI1              =          -
COFP-BUKRS2            =          -
COFP-GJAHR2             =          -
COFP-BELNR2             =          -
COFP-BUZEI2              =          -
COFP-EBELN               =          -
COFP-EBELP               =          -
COFP-ZEKKN               =          -
COFP-ETENRM            =          -
COFP-STUNR               =          -
COFP-LIFNR                =          -
COFP-KUNNR              =          -
COFP-GSBER              =          -
COFP-BUKRS              =          (nearly same as COFP-KOKRS!)
                                               if COSP-OBJNR begins with ‘PR’
                                               Check table PRPS with COSP-OBJNR = PRPS-OBJNR and enter PRPS-PBUKR
                                                If COSP-OBJNR begins with ‘NV’
                                               Check table AFVC with COSP-OBJNR = AFVC-OBJNR,
go to Table AFKO with AFVC-AUFPL,
go to table AUFK with AFKO-AUFNR and enter AUFK-BUKRS
If COSP-OBJNR begins with ‘OR’
Check table AUFK with COSP-OBJNR = AUFK-OBJNR
and enter AUFK-BUKRS
COFP-EINDT                =          -
COFP-SGTXT               =          -
COFP-GEBER              =          -
COFP-KURSF              =          -
COFP-KUFIX                =          -
COFP-GBETR              =          -
COFP-KURSR              =          -
COFP-KURSFIKRS       =          -
COFP-KZKRS               =          -
COFP-UMBKZ              =          -
COFP-KBLNR               =          -
COFP-KBLPOS            =          -
COFP-HI FIVOR            =          -
COFP-LO FIVOR          =          -
COFP-HI ACCOUNT      =          -
COFP-LO ACCOUNT     =          -
COFP-HI LIFNR            =          -
COFP-LO LIFNR           =          -
COFP-HI KUNNR          =          -
COFP-LO KUNNR         =          -
COFP-XDELETE           =          -
COFP-HI XOPVW         =          -
COFP-LO XOPVW        =          -
COFP-ZAEHK               =          -
COFP-CHAINBELNR     =          -
COFP-MWSKZ             =          -
COFP-LEDNR               =          -
COFP-BELTP               =          ‘1’
COFP-VERSN              =          ‘0’
COFP-OWAER             =          COSP-TWAER
COFP-CPUDT               =          SY-DATUM
COFP-CPUTM              =          SY-TIME
after doing updation, its again saying Selection of all entries in table COFP with value type 51 to 62, selected year, selected cost elements above and for all selected WBS elements and all objects underneath. Summarisation by period.
Now, can someone help me as how to proceed with the entire thing? An elaborate and illustrative answer would be highly appreciable.
If you require any other information....then get back to me ..asap.
Its bit urgent.
Thanks & Regards,
Ravi

Answer 1

Hi
update <table> from <i_tab>
for different conditions.
loop at i_cosp.
if cosp-mandt eq sy-mandt and  cosp-objnr eq 'PR'.
Read table i_PRPS with key  i_PRPS-OBJNR = i_COSP-OBJNR.
if sy-subrc eq 0.
update PRPS set PKOKR = ? where objnr = i_prpr-objnr.
endif.
endif.
similarly for all the conditions
Regards
Message was edited by: Harikishore Sreenivasulu