diff --git a/passerelle_minint/minint_seisin/views.py b/passerelle_minint/minint_seisin/views.py
index 61557ca..54141d2 100644
--- a/passerelle_minint/minint_seisin/views.py
+++ b/passerelle_minint/minint_seisin/views.py
@@ -66,20 +66,28 @@ class ResourceView(DetailView):
         formdata = json_loads(request.body)
         fields = formdata.get('fields', {})
         extras = formdata.get('extra', {})
+        workflow_fields = formdata.get('workflow', {}).get('fields', {})
 
         debug = 'debug' in request.GET
         if debug:
             debug_output = {}
 
-        # attachment: only one (the first)
+        # attachment: only one allowed. Search first in workflow_fields, then in fields
         attachmentData = client.factory.create('arrayOfAttachmentContent')
         attachmentData.source = '?'
-        for name, value in fields.items():
+        for name, value in workflow_fields.items():
             if isinstance(value, dict) and value.get('filename') and value.get('content'):
                 attachmentData.fileName = '"%s"' % value['filename']
                 attachmentData.attachmentType = value.get('content_type')
                 attachmentData.source = value['content']
                 break
+        else:
+            for name, value in fields.items():
+                if isinstance(value, dict) and value.get('filename') and value.get('content'):
+                    attachmentData.fileName = '"%s"' % value['filename']
+                    attachmentData.attachmentType = value.get('content_type')
+                    attachmentData.source = value['content']
+                    break
 
         if debug:
             debug_output['attachmentData'] = '%r' % attachmentData