LinkedIn Marketing API: How to filter adCampaigns by multiple statuses using search parameter without 400 error?

I’m working with the LinkedIn Marketing API and trying to fetch ad campaigns for a given account using the search parameter to filter by status.

According to the docs, the endpoint should look like this:LinkedIn Marketing API

GET https://api.linkedin.com/rest/adAccounts/{account_id}/adCampaigns

I’ve been trying Strategy A with a parenthesized search clause:

GET https://api.linkedin.com/rest/adAccounts/11111111/adCampaigns
    ?q=search
    &search=(status%3A(values%3AList(ACTIVE,DRAFT,PAUSED,ARCHIVED)))
    &fields=id,name,type
&count=100

But this consistently returns:

Status: 400
Body: {"status":400,"code":"ILLEGAL_ARGUMENT","message":"Invalid query parameters passed to request"}

I also retried with fully-encoded search values, e.g. encoding parentheses/commas as well, but then I get:

{"errorDetails":{"inputErrors":[{"description":"Invalid value for param; wrong type or other syntax error",
"input":{"inputPath":{"fieldPath":"search"}},"code":"PARAM_INVALID"}]}}

Things I’ve tried so far:

• Encoding colons as %3A while leaving parentheses/commas unescaped.
• Encoding the whole thing strictly (everything encoded).
• Switching values:List(...) to values:(...).
• Double-checking against LinkedIn’s Rest.li query DSL.

All fail with the same 400 errors.

My Question: Has anyone actually managed to get parenthesized search=(...) form) to work with adCampaigns? If so, what exact query string and encoding worked for you? Or is the only working approach the dotted form (search.status.values[0]=ACTIVE) and LinkedIn has silently dropped support for the parenthesized variant?