Configure a VLAN as RSPAN VLAN
Associate RSPAN source-session no with source port or vlan
Associate RSPAN destination session no with RSPAN vlan
Associate RSPAN source no with with RSPAN vlan
Associate an RSPAN destination session no with destination port
You are both right
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12-2_40_se/configuration/guide/scg/swspan.pdf
Pages 17,18,19
I believe you are correct.
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12-2_40_se/configuration/guide/scg/swspan.pdf
Right Order should be :
Configure a VLAN as RSPAN VLAN
Associate RSPAN source-session no with source port or vlan
Associate RSPAN destination session no with RSPAN vlan
Associate RSPAN source no with with RSPAN vlan
Associate an RSPAN destination session no with destination port
Correct me if i am wrong