diff --git client/c/client.c client/c/client.c
index 88ee3ea..cc4c4b5 100644
--- client/c/client.c
+++ client/c/client.c
@@ -128,6 +128,23 @@ genom_<"$comp">_client_<"[$s name]">_rqst(
     h->csid, <"$COMP">_<"[$s name]">_RQSTID,
     (char *)in, 0, genom_<"$comp">_<"[$s name]">_encode,
     <"[expr ${noack} ? "FALSE" : "TRUE"]">, 0, 0, &rid);
+
+  if (e != OK && errnoGet() == S_csLib_TOO_MANY_RQST_IDS) {
+    /* The doevents function may not have been called recently enough by a
+     * client, or the event thread may not have been scheduled in time. In any
+     * case we have no room for more requests. It is worth trying to delay this
+     * one a bit by trying to process any pending events.
+     * Note that this may recursively call other requests callbacks, so clients
+     * must be prepared for that.
+     */
+    genom_<"$comp">_client_doevents(h);
+
+    e = csClientRqstSend(
+      h->csid, <"$COMP">_<"[$s name]">_RQSTID,
+      (char *)in, 0, genom_<"$comp">_<"[$s name]">_encode,
+      <"[expr ${noack} ? "FALSE" : "TRUE"]">, 0, 0, &rid);
+  }
+
   if (e != OK) {
     genom_mwerr_detail d;
     h2getErrMsg(errnoGet(), d.what, sizeof(d.what));