Symptom
- While performing an upgrade using the Software Update Manager (SUM) an error occurs in phase PREP_INSTALL/SUBMOD_PREP_INSTALL/INITSHD
- The error message displayed in the SUM GUI is similar to : "Forbidden instance number XX must not be used."
- In the INITSHD.LOG an entry similar to :
1 ETQ399 Found usable instance number <XX>.
4 ETQ399 Starting dialog 'ShadowInstNr' at <DATE>.
4EETQ399 Dialogue validator 'ShdInstNrVal?idator' failed with 'Forbidden instance number <XX> must not be used.
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Product
SAP S/4HANA 1610
Keywords
Forbiden , KBA , BC-UPG-PRP , Upgrade Preparation , Problem
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