Update Dependencies: Is it safe to update Backend and leave FES?

[JaySchwendemann]

Dear all,

tl;dr:

Are there any dependencies between higher patchlevel backend components (e.g. GBX01HR 600 SP1) and lower level frontend components (e.g. UIHR001 100 SP0)?

Details:

we have the following landscape:

Basic componencts:

HCM: ERP System on NW 7.4 SP9 sporting SAP_APPL 617 SP7 and SAP_HR 608 SP12 (and so on)

FES: System on NW 7.4 SP9

App specific components:

HCM: GBX01HR 600 SP0 + GBX01HR5 605 SP0

FES: UIHR001 100 SP0

We are planning to upgrade our HCM in July. We would like to take the chance to also update the app specific components on the HCM system to then GBX01HR 600 SP1 or the then released GBX01HR 600 SP2 (there's currently no GBX01HR5 605 SP1).

Will this be supported, even if we don't update FES component UIHR001 100 SP0 for a brief period of time?

It's safe to say that we do not benefit from new features or error corrections that way, but will things be working? Our overall plan would be to patch FES to 7.4 SP 12 in August and then implementing all the frontend patches of Wave 9 (July Quarter Release) in FES.

PS:

I know about this pretty awesome document which states in paragraph 3.5.1c that our approach could work but that we need to check landscape planner, MOPZ and check the product specific notes.

Many thanks and kind regards

Jens

[JaySchwendemann · Accepted solution]

Seems that this is supported on a "per product basis", also depending on a minimum Version of the Backend / Frontend components of the app.

Example: For "Fiori Principal Aps for SAP ERP 1.0" you can update the backend component and leave the frontend component or vice versa if the minimum SP level was SP5. See here http://service.sap.com/sap/support/notes/1930165.

So generally it is possible but seems to "depend" on the product and the previously installed SP level.

Nevertheless I'd be happy if someone with a more insight knowledge might share if there was a general rule or goal to enable such independence or if this stays to be only available per product.

Many thanks and kind regards

Jens

[JaySchwendemann]

Marked the previous as correct as there seems to be no general rule that upgrading the backend components is safe. It seems to be a per product / component decision.

Cheers