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Using MTOM and CRM 2015 Organization Service

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Posted on by Community Member Microsoft Employee

Hello

I have the following Case. We developed a Web Application with a Connection to CRM. We are using the Organization service but we have to go over an enterprise service bus because the web server is not in the same zone as the CRM server. This enterprise service bus has a request size limitation of 4 MB. That is a problem for us because we have to save excel files as notes in CRM. The size of those Excel files can go up to 8 MB. Our customer wants to use MTOM (https://en.wikipedia.org/wiki/Message_Transmission_Optimization_Mechanism). I am not a Network specialist and so far, I have never heard of the method.

I cannot find any article whether CRM 2015 Organization Service supports MTOM or not. Does someone know a documentation or a statement from Microsoft? If we can prove that MTOM is not supported we can get an exclusion from this 4 MB rule.

Regards Thibault

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David Jennaway 14,063 on at

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RE: Using MTOM and CRM 2015 Organization Service

I'm pretty sure the CRM Organization service doesn't support MTOM. MTOM is used for sending binary data (xs:base64Binary), but the CRM Organization service expects file contents to already be encoded as a base64 string, not binary data.

However, I doubt you'll get anything more specific from MS on this