From 502e21b2cb6da649c97a00b0a484a2ab1b1ba408 Mon Sep 17 00:00:00 2001
From: Matthias <xmatthias@outlook.com>
Date: Mon, 24 Aug 2020 11:17:27 +0200
Subject: [PATCH] Add unfilled explanation for sandboxes

---
 docs/sandbox-testing.md | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/docs/sandbox-testing.md b/docs/sandbox-testing.md
index 9556dd014..9c14412de 100644
--- a/docs/sandbox-testing.md
+++ b/docs/sandbox-testing.md
@@ -91,3 +91,27 @@ Sandbox exchange instances often have very low volume, which can cause some prob
 
 Since Sandboxes often have low volume, candles can be quite old and show no volume.
 To disable the error "Outdated history for pair ...", best increase the parameter `"outdated_offset"` to a number that seems realistic for the sandbox you're using.
+
+### Unfilled orders
+
+Sandboxes often have very low volumes - which means that many trades can go unfilled, or can go unfilled for a very long time.
+
+To mitigate this, you can try to match the first order on the opposite orderbook side using the following configuration:
+
+``` jsonc
+  "order_types": {
+    "buy": "limit",
+    "sell": "limit"
+    // ...
+  },
+  "bid_strategy": {
+    "price_side": "ask",
+    // ...
+  },
+  "ask_strategy":{
+    "price_side": "bid",
+    // ...
+  },
+  ```
+
+  The configuration is similar to the suggested configuration for market orders - however by using limit-orders you can avoid moving the price too much, and you can set the worst price you might get.