FAQ.md

@@ -114,7 +114,7 @@ then rerun voronoi which should work.
 
 #### 5. Fixing inconsistent inputs
 
-These issues reflext an inconsistent choice in the input parameter but can be fixed if the `inputcard` is modified.
+These issues reflects an inconsistent choice in the input parameter but can be fixed if the `inputcard` is modified.
 
 ##### 5.1 `R_LOG` too small
 
@@ -153,5 +153,22 @@ The `R_LOG` parameter needs to be bigger than `Rmesh(IRMIN(I1), I1)`. In the abo
 R_LOG= 0.45
 ```
 
----
+##### 5.2 `KPOIBZ` too small
+
+**Symptoms:**
+The KKRhost code stops with the error message `<BZIRR3D> increase parameter KPOIBZ'`. The reason is that the k-mesh in the inputcard (`BZDIVIDE` input) can't fit into the default size of corresponding working arrays. In the output it also tells you what to do (here an example for `BZDIVIDE= 64 64 64`:
+```
+...
+ No. of k-points 262144 > KPOIBZ 
+STOP <BZIRR3D> increase parameter KPOIBZ'
+```
 
+**Fix:**
+The `KPOIBZ` parameter needs to be bigger than `product(BZDIVIDE)`. In the above example we can fix this by changing/adding the `KPOIBZ` input in the `inputcard` with a larger value:
+```
+BZDIVIDE= 64 64 64
+...
+KPOIBZ= 262144 # == 64^3
+```
+
+---