Either an invalid field length for an ADS field passed in the CICS® Service Flow Runtime XML request message or an invalid BMS OCCURS attribute length was found in the CICS SFR Link3270 Passthrough XML program (DFHMAXPI) when parsing the XML document.
The most likely cause is an invalid passthrough request message format.
Check that the correct Link3270 passthrough request message format and header structure field settings are used in the client application or service requestor. An 'oi' or 'OI' tag was found but the length of the attribute was greater than 4 bytes in length.