Merge pull request #31113 from Jann-Skotdal/master

Translator limits

Author: Jak-MS

articles/cognitive-services/Translator/reference/v3-0-break-sentence.md

@@ -150,7 +150,7 @@ The following are the possible HTTP status codes that a request returns.
   </tr>
   <tr>
     <td>429</td>
-    <td>The caller is sending too many requests.</td>
+    <td>The server rejected the request because the client has exceeded request limits.</td>
   </tr>
   <tr>
     <td>500</td>

articles/cognitive-services/Translator/reference/v3-0-detect.md

@@ -154,7 +154,7 @@ The following are the possible HTTP status codes that a request returns.
   </tr>
   <tr>
     <td>429</td>
-    <td>The caller is sending too many requests.</td>
+    <td>The server rejected the request because the client has exceeded request limits.</td>
   </tr>
   <tr>
     <td>500</td>

articles/cognitive-services/Translator/reference/v3-0-reference.md

@@ -157,7 +157,7 @@ The error code is a 6-digit number combining the 3-digit HTTP status code follow
 | 405000| The request method is not supported for the requested resource.|
 | 408001| The custom translation system requested is not yet available. Please retry in a few minutes.|
 | 415000| The Content-Type header is missing or invalid.|
-| 429000, 429001, 429002| The server rejected the request because the client is sending too many requests. Reduce the frequency of requests to avoid throttling.|
+| 429000, 429001, 429002| The server rejected the request because the client has exceeded request limits.|
 | 500000| An unexpected error occurred. If the error persists, report it with date/time of error, request identifier from response header X-RequestId, and client identifier from request header X-ClientTraceId.|
 | 503000| Service is temporarily unavailable. Please retry. If the error persists, report it with date/time of error, request identifier from response header X-RequestId, and client identifier from request header X-ClientTraceId.|
 

articles/cognitive-services/Translator/reference/v3-0-translate.md

@@ -209,7 +209,7 @@ The following are the possible HTTP status codes that a request returns.
   </tr>
   <tr>
     <td>429</td>
-    <td>The caller is sending too many requests.</td>
+    <td>The server rejected the request because the client has exceeded request limits.</td>
   </tr>
   <tr>
     <td>500</td>

articles/cognitive-services/Translator/reference/v3-0-transliterate.md

@@ -143,7 +143,7 @@ The following are the possible HTTP status codes that a request returns.
   </tr>
   <tr>
     <td>429</td>
-    <td>The caller is sending too many requests.</td>
+    <td>The server rejected the request because the client has exceeded request limits.</td>
   </tr>
   <tr>
     <td>500</td>

articles/cognitive-services/Translator/request-limits.md

@@ -18,23 +18,24 @@ This article provides throttling limits for the Translator Text API. Services in
 
 ## Character limits per request
 
-Each request is limited to 5,000 characters. You're charged per character, not by the number of requests. It's recommended to send shorter requests, and to have some requests outstanding at any given time.
+Each Translate request is limited to 5,000 characters. You're charged per character, not by the number of requests. It's recommended to send shorter requests.
 
-There's no limit on the number of outstanding requests to the Translator Text API.
 
 ## Character limits per hour
 
-Your character limit per hour is based on your Translator Text subscription tier. If you reach or surpass these limits, you'll likely receive an out of quota response:
+Your character limit per hour is based on your Translator Text subscription tier. The hourly quota should be consumed evenly throughout the hour. If you reach or surpass these limits, or send too large of a portion of the quota in a short period of time, you'll likely receive an out of quota response. 
 
 | Tier | Character limit |
 |------|-----------------|
 | F0 | 2 million characters per hour |
 | S1 | 40 million characters per hour |
-| S2 | 40 million characters per hour |
-| S3 | 120 million characters per hour |
-| S4 | 200 million characters per hour |
+| S2 / C2 | 40 million characters per hour |
+| S3 / C3 | 120 million characters per hour |
+| S4 / C4 | 200 million characters per hour |
 
-These limits are restricted to Microsoft's generic systems. Custom translation systems that use Microsoft's Translator Hub are limited to 1,800 character per second.
+Limits for [multi-service subscriptions](https://docs.microsoft.com/en-us/azure/cognitive-services/translator/reference/v3-0-reference#authentication) are the same as the S1 tier.
+
+These limits are restricted to Microsoft's standard translation models. Custom translation models that use Custom Translator are limited to 1,800 character per second.
 
 ## Latency