My client is operating on ECC5.0. Now we are planning to activate the material ledger with actual costing functionality for this client. I read the SAP note which lists the considerations we need to keep in mind when activating material ledger for a live client and I understand that it is very tough to reverse back once the material ledger is impelmented. That is the reason why we want to explore beforehand, all the issues and problems that we may come acros when implementing material ledger in a live environment.
Please let me know if anybody has ever done that and if so, then what are the important considerations and steps.
Did you check the following notes which give a detailed information about Material Ledger activation:
596558 Material ledger production startup
384145 Advice note on material ledger production startup
165844 Material ledger production startup
Please, check attached note 596558, which provides recommendations
on Material Ledger production startup:
b) Always activate the material ledger for a complete company code
and copy all currencies from FI. This is the only way to ensure
the reconciliation with FI.
c) In addition, it is recommended that you activate the material
ledger for a complete company code because the invoice
verification can neither store invoices that contain materials
from plants the material ledgers of which are active nor more
materials from plants the material ledger of which is not active.
Please, consider that only transactions performed after the startup
will be taken into account for the actual price calculation.
You can run the productive startup also in the middle of a period,
but take into account the recommendation in note 596558, point d.
d) If you want to activate the actual costing, it is recommended
that you do this at the period start. As of the point in time of
the activation, material movements are then updated in the
material ledger quantity structure tool, and you can use
Concerning the updating in the general ledger accounts, please
check the attached note 908737. The leading ledger will be updated
according to the general ledger accounts customized in transaction OBYC.
Related to the ML Deactivation in a productive system, be aware of the effects of the Deactivation.
If you deactivate Material Ledger for a productive plant, the material
ledger master data is deleted. Prices and inventory values in
parallel currencies and their history are lost.
To deactivate Material Ledger you have to read note 425487 carefully,
which explains the deactivation effects.
Please, consider the following topic:
Deactivating the material ledger from a Profit Center Accounting point
If transfer prices are active in your system, you cannot deactivate the
material ledger. Refer to Note 175758.
When you start using Material Ledger, you have two steps:
- 'activate' ML in SPRO, and then
- 'set ML as productive' by running CKMSTART.
When we say 'deactivate ML' in note 425487, we mean both steps:
- reset ML from productive by running report SAPRCKMJX
- 'deactivate' ML in SPRO.
Note 108374 references the step 'set ML as deproductive'.
The consequences of deactivating the Material Ledger are:
- All historical data is deleted
- No valuation of materials in parallel currencies
- Purchase order History is deleted and cannot be recreated
- Actual Costing is not possible any more
- Actual Cost Component Split information is deleted
In fact you will delete all the Material Ledger tables.
If you don't use transfer prices and if the leading CO-version 0 is
not managed in profit center view you can deactivate ML according to
note 108374. Therefore report SAPRCKMJX has to be run and the
Customizing has to be deactivated afterwards.
I hope this explanation helps.