Some Groups are not detected with OUL_R22 Format

[JiAimeAime]

Hi

When using a messagevisitor to parse HL7 message i have some issue with format OUL R22 that i don't have with format ORU R01.
Some groups are not "detected". I traced all groups starts and never get any "/SPECIMEN/ORDER/" neither "/SPECIMEN/ORDER/RESULT/" groups. (hl7 message do have OBX , OBR and ORC segments ...)

Don't know if it's a cause, a consequence or something else but segments ORC are parsed in the visitor as "ORC" (not /SPECIMEN/ORDER/ORC-x) as it should (same for OBR and OBX).

Any ideas why ?