Classic GL Migration to HANA Finance

[Former Member]

Hi Guys,

We are performing an upgrade project from 4.6 (Classic GL) to S/4 HANA Finance. There is contradictory information regarding Activation of New GL while upgrading to HANA Finance.

1. SAP says we can migrate directly from Classic GL to HANA at any period end. However the New AA module requires the New GL to be activated. Can someone please provide some clarity about this. Also what are the additional steps that needed to be performed during migration from Classic GL to HANA when compared to ECC.

2. Secondly is it Mandatory to Perform month end activities before proceeding with HANA Migration activities. It would be great if someone can share the Note mentioning this from SAP.

3. What is the expected business downtime for an approx DATA Volume of 1.3 TB (almost 40% related to FICO)

Thanks in Advance

SP Kumar

[Former Member · Accepted solution]

Hi.

1. You can migrate from classic GL, new FI-AA will be activated during this migration.

You will needed to perform several additional activities, like currency revaluation resetting, adding authorization (e.g. for segment and PC).

2.Yes. I recommend to attend course AC100.

3. It's difficult to say. It depends on a lot of criteria, e.g. server capacity...

[João_FI_FIN-CS]

Hi,

Adding information, to get an overview from classic GL to New GL you can research AC212 and 1070629 - FAQs - Migration to General Ledger Accounting (new) note. Also, SAP provide a link to this Migration. Please visit the link below:

https://websmp201.sap-ag.de/~form/handler?_APP=00200682500000002672&_EVENT=DISPLAY&_SCENARIO=&_HIER_...

Thanks.

JPA

[Former Member]

Thanks for the response Aleksey and Mrinal,

We have a scenario here,

We are migrating from Classic GL to HANA Fin 1503. One of the requirement of Migrating to HANA Finance is to close the books before migration.

Now let's say the month end is on 31st December , however the month end activity is carried out upto 6th Jan and hence a backup will be taken on 6th Jan for migration.

Now the issue is what happens to the transaction data from 1st Jan to 6th Jan, the data is still open.

Appreciate your response on this.

Thanks & Regards

SP Kumar

[Former Member]

Hi, its not an issue, you can post documents in new period till installation,

but you need to perform some closing  activities for new period or avoid specific posting, e.g. perfom ASKBN or avoid FI-AA posting because ASKBN doesn't exist in S4

[Mrinal_K_Roy]

Hi SP,

Trying to clarify your query based on my understanding

Point 1 // S4H needs new GL . Note that parallel accounting , document splitting are NOT needed . Only the concept of ledger (leading) needs to be implemented. Technical activation of new GL is needed in S4H as the data structure in S4H is similar to new GL in ECC.

For detailed migration steps , refer AC100 or the steps in IMG path

Point 2 // Refer note 1939592 for Pre-checks on asset accounting . Also note that , if you are on classic asset accounting in ECC , then all asset / depreciation postings need to be completed in ECC prior to migration to new asset accounting solution in S4H.

With regards,

Mrinal