Create a pick list from shop order operations

Hello.

We have an issue on a custom menu we made to generate a pick list from a list of shop order operations.

In our developement, we have this :

IF (p_user_language_ = 'FR') THEN

    v_consolidate_ := 'Entrepôt';

ELSIF (p_user_language_ = 'EN') THEN

    v_consolidate_ := 'Warehouse';

ELSIF (p_user_language_ = 'PT') THEN

    v_consolidate_ := 'Warehouse';

END IF;

--v_order_no_BP_ contains a list of ORDER_NO with ; as separated value, the length of v_order_no_BP_ is 287 characters

message_ :='!

$ACTIVITY_SEQ=0

$COM_PART=%

$CONSOLIDATE='||v_consolidate_||'

$CONTRACT=ABCDE

$DEPARTMENT=%

$FROM_REQ_DATE=

$INCLUDE_MATERIAL=TRUE

$INVENTORY_PART=%

$ISSUE_FROM_LOC=%

$LOCATION_GROUP=%

$MAX_ORD_PER_PICK_LIST=0

$ONLY_COMPLETE_LINES=FALSE

$ONLY_COMPLETE_ORDERS=FALSE

$OPERATION_NO=0

$ORDER_NO='||v_order_no_BP_||'

$ORDER_TYPE=%

$PHANTOM_PART_NO=

$PRINT_PICK_LIST=0

$PRODUCTION_LINE=%

$PROJECT_ID=%

$RELEASE_NO=%

$SEQUENCE_NO=%

$SHOP_ORDERS_KEY_LIST=%

$START_DATE_FROM=

$START_DATE_TO=

$TO_REQ_DATE=

$WAREHOUSE_PICK_LIST=FALSE

$WORK_CENTER=%

';

Shop_Material_Pick_Util_API.Create_So_Consol_Impl__(message_);

The problem we are having is about the call of the procedure, saying there is a out of space problem on a variable. 

What can we do to fix this issue?