# Rover FDICT
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This article describes how Rover File Dictionaries work with Rover Web
# Table of Contents
# Field
The field object controls the UI and controls of an Input in Rover Web.
# Lookups
Lookups can be used on an individual field if the reference_file property is defined and a corresponding FDICT with lookups exists. If all conditions are met a "Search" icon will appear to the right of the input.
{
"field_no": "0",
"conv": "MCU",
"dict_name": "REP.ID",
"desc_items": [
{
"desc": "Rep.Id"
}
],
"just": "R",
"len": "6",
"reference_file": "REP"
}
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The FDICT file will need at least one lookup_name_items to be defined. If multiple lookups are available then a dropdown will be presented to allow a user to select from one. lu_enabled is set to "Y" is required.
{
"total_records_found": "1",
"BlockSize": "50",
"fdict_items": [
{
"file_name": "REP",
"lookup_name_items": [
{
"lookup_name": "NAME",
"lu_menu_caption": "Lookup rep by name",
"lu_enabled": "Y",
"lu_list_caption": "Lookup rep by name",
},
{
"lookup_name": "ALL.REPS",
"lu_menu_caption": "Rep Listing by Name",
"lu_enabled": "Y",
"lu_list_caption": "Rep Listing by Name",
},
]
}
]
}
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