3508889 - EDI FTX segment error: "Notification that a segment was repeated too many times."

You send a document (e.g. Purchase Order) through Business Network and Managed Gateway for Spend Management and Business Network and the same document is failing during conversion from cXML format to EDI D96 format. 

In Business Network you see the following message:

PO-11: Cannot deliver order. Terminal error code for PO status: EDI Schema Validation failed..

When downloading the validator result file in Managed Gateway for Spend Management and Business Network you see the following (or very similar) response:

<Error>
 <ElementType>SegmentElement</ElementType>
 <XPath>/Interchange/M_ORDERS/G_SG25/S_FTX</XPath>
 <ErrorCode>35</ErrorCode>
 <ErrorText>Notification that a segment was repeated too many times.</ErrorText>
 <SegmentPosition>132</SegmentPosition>
</Error>

SAP Business Network

SAP Managed Gateway for Spend Management and Business Network 

KBA , BNS-ARI-CI-SUP-AN , Managed Gateway for Business Network Sell Side , SBN-AN-TX-POA , Transaction (Purchase Orders, Ship Notices & Goods Receipts) , How To