Symptoms
The receive location for the BizTalk Adapter for WebSphere MQ (MQSC Adapter) that has the UTF-8 set in the port can't receive large messages. Here are the two message size limits:
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If the MQSC adapter uses the IBM MQ client, the message can't exceed 70 MB.
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If the MQSC adapter uses the Microsoft MQ client, the message can't exceed 95 MB.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Resolution
This issue is fixed in the following cumulative update for Host Integration Server:
References
Learn about the terminology that Microsoft uses to describe software updates.