Handling Units via Idoc

Hi all,

Im trying to create Handling Units in a Shipment with Deliveries by use of idoc SHPMNT05

According to SAP docs I need to fill field EXIDV with $1, $2 etc.... in both segments E1EDT37 and E1EDT43 so that upon posting a HU Identifier number is created.

However, this is not working and Im getting the error that system cannot create HU $1

<E1EDT37 SEGMENT="1">

<EXIDV>$14</EXIDV>

<TARAG>13.600</TARAG>

<GWEIT>KGM</GWEIT>

<BRGEW>228.600</BRGEW>

<NTGEW>213.600</NTGEW>

<GWEIM>KGM</GWEIM>

<BTVOL>13679746.600</BTVOL>

<VHILM>not filled</VHILM>

<E1EDT43 SEGMENT="1">

<VELIN>3</VELIN>

<EXIDV>$1</EXIDV>

</E1EDT43>

<E1EDT43 SEGMENT="1">

<VELIN>3</VELIN>

<EXIDV>$2</EXIDV>

</E1EDT43>

Any ideas are most welcome.

rgds,

eric