The document hash does not match the hash in the XML

[ideveloper]

Так как описано здесь http://msdn.microsoft.com/en-us/library/cc639058.aspx это даже необходимо

[...]When you read data, AIF returns a document hash field. This field contains a hash of all the RecId and RecVersion values for each record that is returned. When you send the data back into AIF to update a record, it recalculates the document hash from the database records in the update and compares it to the document hash in the inbound message. If the data has changed, for example, if a record was updated or added, the calculated document hash will differ from the document hash in the inbound document and AIF will return an error.

When you use the document hash, you only have to read and submit one field for comparison instead of reading and submitting the RecId and RecVersion values for each record.[...]