Add Approvers to custom field using JSON

[Deleted user]

When the approvers field is updated, I am trying to automatically add those users to the existing custom field (as it may already contain some users and I want to preserve them, and just add on them)

Be aware, both fields are multi-user fields.

[Deleted user · Accepted solution]

‎

[Tansu Akdeniz]

Hi @[deleted] 

You can check "Add to existing values" and copy from another field within issue.

ps: For json update method, please check Advanced field editing page 

Sample one with add;

{
"update": {
"customfield_xxxxx" : [
{
"add": {
xxxxxxxx
}
}
]
}
}

[Deleted user]

Hi Tansu, trying

{
"update": {
"customfield_10561" : [
{
"add": {
"issue.approvers" : [
]}
}
]
}
}

gets me the following error, 
Field 'customfield_10561' cannot appear in both 'fields' and 'update')