Xpath
/control/member-list[@sync-qualifiers]
Possible values ( use one or more, comma separated)
keep_unsubscriptions
keep_bounces
overwrite_profile_completely
Example 1
<member-list sync-qualifiers="overwrite_profile_completely">
Example 2
<member-list sync-qualifiers="overwrite_profile_completely,keep_bounces">
Error response
<faultstring>attribute 'sync-qualifiers' under element [member-list: null] has invalid value 'add'</faultstring>