# extend_header

**IRI:** https://folio.openlegalstandard.org/R831qlTEfOY7fTNpogU2lwU

## Labels

## Definition

"Used for client and/or firm specific extensions to the FIRM Segment  (See EXTEND_HEADER Segment below).  

If no extensions are defined, this element will not be present.
"

## Sub Class Of

- https://folio.openlegalstandard.org/R8ktJqdQifgzEaV2DJkdMZa
- https://folio.openlegalstandard.org/R9JDOjlrvV3jFpUOQu9WGhP
- https://folio.openlegalstandard.org/R9VdnoybnEodiN0EUTedSOz
- https://folio.openlegalstandard.org/RCdJG6uCwl9vj0GwxJe7mez
- https://folio.openlegalstandard.org/RDwNOkyYBQw2SPTqJl6tIjZ
- https://folio.openlegalstandard.org/RHfeijrOTjaF7qpuoGIGkR
- https://folio.openlegalstandard.org/RUhRF0bxk2nZewt5TXbmai
- https://folio.openlegalstandard.org/RbP2hC5iPogaZjkx1uaECq

**Deprecated:** False