Thank you for the request!

Unfortunately, it doesn’t appear that the reporting API for Microsoft Ads supports Target ROAS at the campaign level. You can confirm here what is supported https://learn.microsoft.com/en-us/advertising/reporting-service/campaignperformancereportcolumn?view=bingads-13

Apologies that we are unable to address your request due to limitations of the API.

Jessica

Thanks for the reply - are your teams working with Microsoft API folks to get this added or is this the end of it? With the roll out of PMAX on Microsoft Ads Troas is really a key data point for performance management (there aren’t a lot for PMAX, but campaign level budget and Troas are a must have)