diff --git a/telethon/events/inlinequery.py b/telethon/events/inlinequery.py
index 6c4e0d3b..8e476584 100644
--- a/telethon/events/inlinequery.py
+++ b/telethon/events/inlinequery.py
@@ -145,6 +145,12 @@ class InlineQuery(EventBuilder):
                         r2 = builder.article('Be bad', text="I don't like you")
                         await inline.answer([r1, r2])
 
+                    You can send up to 50 results as documented in
+                    https://core.telegram.org/bots/api#answerinlinequery.
+                    Sending more will raise ``ResultsTooMuchError``,
+                    and you should consider using `next_offset` to
+                    paginate them.
+
                 cache_time (`int`, optional):
                     For how long this result should be cached on
                     the user's client. Defaults to 0 for no cache.
diff --git a/telethon/tl/custom/inlinebuilder.py b/telethon/tl/custom/inlinebuilder.py
index 05816f2c..93a7930e 100644
--- a/telethon/tl/custom/inlinebuilder.py
+++ b/telethon/tl/custom/inlinebuilder.py
@@ -43,8 +43,15 @@ class InlineBuilder:
         id (`str`, optional):
             The string ID to use for this result. If not present, it
             will be the SHA256 hexadecimal digest of converting the
-            request with empty ID to ``bytes()``, so that the ID will
-            be deterministic for the same input.
+            created :tl:`InputBotInlineResult` with empty ID to ``bytes()``,
+            so that the ID will be deterministic for the same input.
+
+            .. note::
+
+                If two inputs are exactly the same, their IDs will be the same
+                too. If you send two articles with the same ID, it will raise
+                ``ResultIdDuplicateError``. Consider giving them an explicit
+                ID if you need to send two results that are the same.
     """
     def __init__(self, client):
         self._client = client
diff --git a/telethon_generator/data/errors.csv b/telethon_generator/data/errors.csv
index 6ccd4667..cd8d81bf 100644
--- a/telethon_generator/data/errors.csv
+++ b/telethon_generator/data/errors.csv
@@ -187,7 +187,9 @@ RANGES_INVALID,400,Invalid range provided
 REG_ID_GENERATE_FAILED,500,Failure while generating registration ID
 REPLY_MARKUP_INVALID,400,The provided reply markup is invalid
 REPLY_MARKUP_TOO_LONG,400,The data embedded in the reply markup buttons was too much
+RESULT_ID_DUPLICATE,400,Duplicated IDs on the sent results. Make sure to use unique IDs.
 RESULT_TYPE_INVALID,400,Result type invalid
+RESULTS_TOO_MUCH,400,You sent too many results. See https://core.telegram.org/bots/api#answerinlinequery for the current limit.
 RIGHT_FORBIDDEN,403,Your admin rights do not allow you to do this
 RPC_CALL_FAIL,,"Telegram is having internal issues, please try again later."
 RPC_MCGET_FAIL,,"Telegram is having internal issues, please try again later."