The following are considerations if migrating an existing z/OS based application: 
               	 
            
 
            	 
             
               		
               - The event 
                     			 unknown_attribute_reference (E20), which is part of the PLISAXA and PLISAXB event structure (but not part of PLISAXC) is generated with the same content
                     as IBM's SAX processor but occurs earlier in the parsing. 
                     		   
                  		
               
- The reference for the event 
                     			 unknown_content_reference (E21) is expanded to be its actual value. 
                     		   
                  		
               
- The events 
                     			 start_of_prefix_mapping (E22) and 
                     			 end_of_prefix_mapping (E23) are currently not supported to maintain compatibility with applications written using IBM's PLISAXA and PLISAXB functionality.
                     
                     		   
                  		
               
- When using the SAX Parser, the 
                     			 exception event (E24) is driven only one time indicating an error, as opposed to having the 
                     			 exception event driven one time per character. See the topic 
                     			 XML Parsing Exception Event error codes for a list of Micro Focus error codes for the 
                     			 exception event (E24). 
                     		   
                  		
               
- PLISAXB accepts filenames as the third parameter in the form 
                     			 file://dd:ddname under batch, where 
                        				ddname is the name of the DD statement that specifies the filefile://filename under UNIX, where 
                        				filename is the name of a UNIX file. The character string specifying the input file should have no leading or trailing blanks. If this is not the format, the
                     parameter value is assumed to be the actual filename. Only files of RECFM=F, FB, FS, FBS and LSEQ are acceptable input.