diff -r 49adcbd7d473 -r 3c23855f7b46 src/server/webdav/multistatus.c
--- a/src/server/webdav/multistatus.c	Thu Jan 16 22:28:22 2020 +0100
+++ b/src/server/webdav/multistatus.c	Fri Jan 17 17:42:10 2020 +0100
@@ -117,6 +117,7 @@
         int status)
 {
     MSResponse *response = (MSResponse*)res;
+    Session *sn = response->multistatus->sn;
     if(response->resource.isclosed) {
         log_ereport(
                 LOG_WARN,
@@ -135,18 +136,9 @@
                 property->name);
         return 1;
     }
-    if(property->nsdef) {
-        // error: nsdef MUST be NULL, only fill nsdef in this func
-        log_ereport(
-                LOG_FAILURE,
-                "%s",
-                "webdav: property '%s': nsdef must be null",
-                property->name);
-        return 1;
-    }
     
     // check if the property was already added to the resource
-    UcxAllocator *a = session_get_allocator(response->multistatus->sn);
+    UcxAllocator *a = session_get_allocator(sn);
     sstr_t key = sstrcat_a(
             a,
             3,
@@ -162,97 +154,20 @@
     }
     a->free(a->pool, key.ptr);
     
-    // add namespace of this property to the namespace map
-    // the namespace map will be used for global namespace definitions
-    if(property->namespace->prefix) {
-        char *ns = ucx_map_cstr_get(
-                response->multistatus->namespaces,
-                (const char*)property->namespace->prefix);
-        if(!ns) {
-            // prefix is not in use -> we can add the namespace to the ns map
-            int err = ucx_map_cstr_put(
-                    response->multistatus->namespaces,
-                    (const char*)property->namespace->prefix,
-                    property->namespace->href);
-            if(err) {
-                return 1; // OOM
-            }
-        } else if(strcmp((char*)property->namespace->href, ns)) {
-            // global namespace != local namespace
-            // therefore we need a namespace definition in this element
-            
-            if(webdav_property_add_nsdef(
-                    property,
-                    response->multistatus->sn->pool,
-                    (const char*)property->namespace->prefix,
-                    (const char*)property->namespace->href))
-            {
-                return 1; // OOM
-            }          
-        }
-    }
-    
     // error properties will be added to a separate list
     if(status != 200) { 
         return msresponse_addproperror(response, property, status);
     }
     
-    // add all namespaces used by this property to the nsdef list
-    WebdavNSList *nslist = NULL;
-    if(property->vtype == WS_VALUE_XML_NODE) {
-        // iterate over xml tree and collect all namespaces
-        int err = 0;
-        WebdavNSList *nsdef = wsxml_get_required_namespaces(
-                response->multistatus->sn->pool,
-                property->value.node,
-                &err);
-        if(err) {
-            return 1; // OOM
-        }
-        nslist = nsdef;
-    } else if(property->vtype == WS_VALUE_XML_DATA) {
-        // xml data contains a list of all used namespaces
-        nslist = property->value.data->namespaces;
-    } // other value types don't contain xml namespaces
-    
-    while(nslist) {
-        // only add the namespace to the definitions list, if it isn't a
-        // property namespace, because the prop ns is already added
-        // to the element's def list or global definitions list
-        if(strcmp(
-                (const char*)nslist->namespace->prefix,
-                (const char*)property->namespace->prefix))
-        {
-            // ns-prefix != property-prefix -> add ns to nsdef
-            if(webdav_property_add_nsdef(
-                    property,
-                    response->multistatus->sn->pool,
-                    (const char*)nslist->namespace->prefix,
-                    (const char*)nslist->namespace->href))
-            {
-                return 1; // OOM
-            }    
-        }
-        nslist = nslist->next;
-    }
-    
     // add property to the list
-    WebdavPList *listelm = pool_malloc(
-            response->multistatus->sn->pool,
-            sizeof(WebdavPList));
-    if(!listelm) {
+    if(webdav_plist_add(
+            sn->pool,
+            &response->plist_begin,
+            &response->plist_end,
+            property))
+    {
         return 1;
     }
-    
-    listelm->property = property;
-    listelm->next = NULL;
-    
-    if(response->plist_end) {
-        response->plist_end->next = listelm;
-    } else {
-        response->plist_begin = listelm;
-    }
-    response->plist_end = listelm;
     return 0;
 }