Hi Fareed,
In MM integration Time sheet data can be successfully transferred only if the purchase order does not have an outline. You must be assigned authorization for the Maintain Service Entry Sheet transaction (ML81).
Working hours - Number of hours to be transferred to MM (Service Entry sheet). PO number will be existing before the CATS entry, which also needs to be selected and transferred.
Expenses Amount - would be entered against Wage type and Cost Center. This needs to be transferred to MM and FICO.
Check the transaction code - CATM and table CATSMM.
For that you need to maintain one cats profile by using CAC1.
Check the fields which is mandatory for your requirement - CAC2
Check with MM consultant for PO's PR (some useful transactions in MM - MM01,ME51n,ME21n, CS01(BOM).
Check the table CATSDB or CATSD structure.
Some useful user exits :
SRVMSTLV Conv. of data during import of standard specs.
SRVPOWEB Purchase order for service entry on Web
SRVQUOT Service export/import for RFQ/quotations
SRVREL Changes to communication structure for release of entry sheet
SRVSEL Selection of services from other systems
Regards
Siva