The replaced SCC software and package versions are inconsistent with previous versions. The replaced SCC mismatches software versions of other boards in the subrack. To avoid the alarm generated due to incorrect load and mismatch, the SCC version is higher than other board versions in the subrack.
At this time, the SCC is upgraded first and then other boards are upgraded. Other boards are inserted after all SCC indicators become normal. But other boards still mismatch the SCC.
For the previous SCC, after power-on, even if the indicators are normal, you should wait for 5 to 10 minutes until the SCC works stably. When using a toolkit to load packages, you can see a process from the normal state to the stable state.
If you insert other boards in the subrack in the waiting period, the loading information of the SCC is unstable. After the information becomes stable, other boards are started. Hence, inconsistent board versions are detected. If you insert other boards first and then the SCC, the same result can occur. As a result, automatic matching fails.