I copied the dsname from the data connection name (doing modify and copying the name from the last screen.)
The command in the form did have the extra spaces - I have now edited it to read
CopyTable /dsnamesrc=zAdminCopyAddresses /tablesrc=/dfs:myFields/dfs:dataFields /rowsrc=/dfs:zAdminCopyAddresses /tabledest=/my:myFields/my:LookupCopyToGroup /rowdest=/my:CopyPeople /empty=yes
I have run the command again and I now get
An error has occurred executing the rule. Failed to select the source row to copy from.
Re the data structure repeating group + fields vs repeating field + attributes. Originally I had a repeating group - but then read one of the previous posts about CopyTable and saw that there was a potential issue with groups vs fields - so I thought I would change it and see if it made any difference.
Catharine