Symptom
You are using the service interface SurveyResponseMaintainBundleRequest and trying to add attachments to the survey via web service call and the system receives the communication but the attachment added to the payload is not available in the submitted survey.
Environment
SAP Cloud for Customer
Cause
Service SurveyResponseMaintainBundleRequest doesn't support response attachment.
Resolution
This is the current system behavior.
If the feature/functionality is required urgently, please refer to KBA 3475641 - Functionality Currently not Available.
An alternative option may be to check the SAP Customer Influencer Site to submit an idea.
Keywords
Web Service ; Survey ; Attachment ; Answer , KBA , LOD-LE-SUR-DEF , Survey definition = design time , How To