We are doing the first-time implementation of PPM. In PPM PM we are going to plan the capacity and do the scheduling. We are going to use Task-Based cost/revenue rates based on Task Types. We calculate the planned costs in PPM project and then transfer it to PS. In regards to the actual costs we are going to calculate them in PS and transfer to PPM. In PS we would only like to use WBS and avoid Networks if possible.
So in order to calculate the actual costs in PS we need to do the activity confirmation in PS. However, if I understand correctly, this is not possible as we have not done the capacity planning and scheduling in PS. In additional we do not have Networks and Network Activities as per default integration PPM--> PS.
And in PPM we cannot calculate the actual costs either because we calculate all other actual costs, for example material purchase in PS. In additional, there are no structures and basis in PPM for the actual cost calculation.
So what is the possible easiest solution?
You don't necessarily need PS Network activity to confirm work on tasks. You can use timesheets as well.
You can book time against your Tasks in CAT2 and this will transfer actual hours and cost to your PPM Task & corresponding Item.
Once you have booked the time against the task in CAT2, you need to run the transfer program DPR_CATS_CPR_TRANSF.
For all other actual cost ex. material GRs or FI posting to the WBS element in PS, You can transfer this cost by running the program RPM_FICO_DATA_TRANSFER or /RPM/FICO_INT_PLANNING.
Hope it helps.
All actual costs will post originally to a PS object. You cannot post costs directly to a PPM object. The cost flow is the same for all costs, first post to PS then transfer to PPM.
You do not need payroll to post activity costs in PS. When you use CATS to capture labor time it is performing an internal allocation of costs (credit a cost center, debit a WBS). You can also use KB21N to post internal costs to a WBS. Using CATS and Confirmations just makes this process more automatic.
What are the conditions for CAT2 to transfer the actual costs to PPM? Should we have wage types/ payroll? We are not going to have that. And how it would work if some actual costs will be accumulated in PS and transferred to PPM (like MM costs) and labor costs will directly go from CAT2 to PPM Task? Would it not be a mess?