I've received a schema from a customer, which contains a reference to "http://schemas.microsoft.com/dynamics/2008/01/sharedtypes" with a schema named "SharedTypes.xsd".
I am new to AX, so I'm not sure how I go about finding this schema. I looked around online and found this: https://technet.microsoft.com/en-us/library/hh769362.aspx, but I am not able to view the schema in Biztalk. Is it possible to find this schema online?
You should also receive this schema from your customer since it always contains the definition of complex data types. You may find one online, but you will miss every customization in AX for your customer implementation and all custom data types as well. Knowing AX, there is always customization work done. I have yet to encounter an AX which uses plain standard.
Ask your customer for the file, without it, your integration will not work.
Be aware however: this file is subject to a lot of changes when dealing with ongoing AX development. If the AX implementation is just starting out, try to have a version number in there somewhere. You'll thank me later.