docs: Added script error in FAQ

docs/guide/src/docs/asciidoc/faq.adoc

@@ -23,4 +23,9 @@ This issue occurs when you fail to supply the `--pass <password>` parameter.
 
 ERR The ID argument cannot be a complete ID because xadd-id-uniqueness-mode is strict::
 This usually happens in Active/Active (CRDB) setups where stream message IDs cannot be copied over to the target database.
-Use the `--no-stream-ids` option to disable ID propagation.
+Use the `--no-stream-ids` option to disable ID propagation.
+
+ERR Error running script... This Redis command is not allowed from scripts::
+This can happen with Active/Active (CRDB) databases because the `MEMORY USAGE` command is not allowed to be run from a LUA script.
+Use the `--mem-limit -1` option to disable memory usage.
+