3565686 - SPAU Error: Adjustment mode of SAP Note XXX is unknown. Check the SAP Note in transaction SNOTE

When trying to adjust an SAP Note with "Unknown Status" in SPAU by clicking on "Compute adjustment mode", below error can be seen:
"Adjustment mode of SAP Note XXX is unknown. Check the SAP Note in transaction SNOTE"

Upon further checking this note in transaction SNOTE by clicking "Check SAP Note", below error can be seen:
"Unable to find delivery event xxxx xxxx"

Note: The SAP Note number and delivery event number displayed in above screenshots are just used as examples. In real situation, the numbers could be different.

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental" 

• Note Assistant tool (SNOTE)
• Support Package Adjustment Utility (SPAU)
• SAP NetWeaver AS ABAP

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