I prepared several changes of schema extensions within one change label. Unfortunatelly later on I realized, some of those changes were with wrong data type, therefore I removed those extensions by using "Remove extension" in Schema Extentions tool and added those extensions again with the correct data type.
When trying to prepare a transport file I get an error message and now I figured out, the removed schema extensions are still in the change label. I guess, this is the reason for the problem, but I don't know, how to fix the change label. In Designer Base data - General - Change labels I can see in the content of the regarding change label, the wrong entries are shown just with its ID, but the field ColumnName still shows, which column the key is belonging to. The regarding columns are shown a bit lower with its new id. In Designer I cannot remove those entries. I guess, I need to do this with the Object Browser, but don't know, which table to modify.
Please let me know, which table to modify or which steps need to be done to correct the change label.