Message type: E = Error
Message class:  CNV_CMIS_U_10 - CMIS Upg: Messages from table cascading functions 
Message number: 100
Message text: Upgrade information will be reused; no buffer extraction necessary
You decided to reuse the upgrade information.
The current activity <ZK>Confirm Availability of Upgrade Reference
System</> and the following activity <ZK>Extract Buffer for Upgrade </>
are set to processed without error.
You can continue with the next phase in the process tree.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_CMIS_U_10100 indicates that during the upgrade process, the system has determined that the upgrade information will be reused, and therefore, no buffer extraction is necessary. This message is typically related to the SAP Conversion and Upgrade process, particularly in the context of the SAP S/4HANA migration or system upgrade.
Cause: Reusability of Upgrade Information: The system has identified that the upgrade information from a previous run is still valid and can be reused. This often occurs when the upgrade process is being executed multiple times or when certain prerequisites have already been met in previous steps. No Changes Detected: The system may not have detected any changes in the data or configuration that would necessitate a new extraction of the buffer.
Solution: Proceed with the Upgrade: Since the message indicates that no buffer extraction is necessary, you can typically proceed with the next steps of the upgrade process without any action
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CNV_CMIS_U_10099 Package &1 already contains assigned upgrade information &2
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CNV_CMIS_U_10098 TABU command file entries are missing in upgrade test system
What causes this issue?  In the upgrade test system no entries were found for the command files of the TABU upgrade transports.System Response  An err...
CNV_CMIS_U_10101 Upgrade information &1 will not be used; new buffer extraction
What causes this issue?  You decided not to reuse the upgrade information.System Response How to fix this error?  You must execute the following activ...
CNV_CMIS_U_10102 Activity cancelled by user
What causes this issue?  Activity was cancelled by user.System Response  The activity ends with status <ZK>Error.</>How to fix this error?...
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