Technical Articles
Upgrade to SAP S/4HANA 1909 – Lessons Learned
In late 2019, we performed an upgrade of S/4HANA from 1809 to 1909 for a major international CPG client.
Here is a quick post to capture the Lessons Learned from technical perspective.
| # | Lessons Learned | When to Act? | Comments |
| 1 | Ensure to check compatibility of installed add-ons. | Before upgrade |
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| 2 | Ensure to review and act on unused ABAP objects | Before upgrade |
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| 3 | Refresh SAPUI5 Extended apps manifest.json files. | Before (& after) |
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| 4 | Ensure to perform BASIS activities | Before upgrade |
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| 5 | Avoid error on “objects found without delivery transport”. | During upgrade |
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| 6 | Prevent Product Hierarchy data loss. | During upgrade |
Of course, this post is not a one-stop place for 1909 upgrade.
You still need to go through the standard documents and usual activities.
The main ones are:
- The S/4HANA 1909 Upgrade Guide itself.
- Use Simplification Item Catalog to identify, review and compare 1909 functionalities with respect to your current version.
- Use Maintenance Planner to generate the stack configuration file and download patches.
- 1909 Release Information Note 2769531.
- 1909 Release Restriction Note 2799003.
- S/4HANA compatible add-ons Note 2214409.
- 1909 compatible Partner Products Note 2834099.
Wish you all the very best for your S/4HANA and 1909 journey!
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For those using embedded Fiori, you will need to rebuild or refresh the caches, also this note is recommended after upgrade 2319491