/support/notes/service/sap_logo.png){kind=logo}
SAP Knowledge Base Article - PreviewSymptom
- During an upgrade to S/4HANA 2025, the SUM tool displayed an error, and dispatcher services were observed to be GRAY.
- Error message in SUM trace: "SYSTEM MANAGER: SUM instance with status GRAY not allowed."
Read more...
Environment
- Upgrade tools for ABAP (SUM 2.0)
- SAP target release 816 (S/4HANA 2025)
- SAP kernel release 916
Keywords
KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , Problem
About this page
This is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP for Me (Login required).Search for additional results
Visit SAP Support Portal's SAP Notes and KBA Search.
/support/notes/service/twitter.svg)
/support/notes/service/youtube.svg)
/support/notes/service/linkedin.svg)
/support/notes/service/instagram2.svg)