Adding an Inventory

Inventories are submitted by BrickLink members on the Add Inventory page. After being submitted, they must be approved by an Inventories Administrator before they become available.

- For the first year after a set was originally released, inventories will only be accepted from sealed set contents.
- New set inventories based on Sealed Set Contents should include all Regular Items, all minifigure inventories, Sticker Sheet(s) and Extra Parts.
- It's also appreciated if you add Counterparts (Stickered Parts are not required).

For more standards please check: Standards for Inventorying a Set
Items which Can't be Inventoried:
Some items in the BrickLink catalog can not be inventoried. Please check: Items which Can't be Inventoried
LEGO data / Inventory Comparison Tool:
For new sets (as well as some older sets and some gears) LEGO data is available. To save you a lot of work, it's best to upload this data first and update the inventory from there.

The same LEGO data is shown in the Inventory Comparison Tool.
Help Page: Help Page Inventory Comparison Tool
Step 1: Select Item Type you want to inventory / Reserve Item
On the top of the Add Inventory page you can choose between five Item Types to inventory.
  • Reserve Item - You can reserve an item first, to prevent that someone else is going to start working on the same inventory: Help Page Reserving an Inventory
  • Manual Add - Also to be used when uploading available LEGO data.
  • Upload File in XML format - Instructions
Step 2: Select Item you want to inventory
  • Enter the item number of the item you want to inventory.
  • Enter the number of entries needed to complete the inventory.
    - If uploading LEGO data, any number will do.
    - For submitting an inventory manually you may estimate this number.
    - In both cases you can add and remove entries on the next page.
Step 3: Upload LEGO data:
If LEGO data is available a pop-up will give you the option to use this data as a base for the inventory. If no LEGO data is available, go to Step 4a.

Some of the entries will require action before moving to the next step:
  • Red lines - This occurs when the inventory has an Element ID that does not yet appear in the BrickLink catalog. (For example: a new part or new part/color combination.) Enter the Item No. and Color ID if known. If not, delete both PCC and Qty data from this entry and add the new item after submitting the inventory. To quickly remove all red lines from the page, click the "Clear all red fields" button.

  • Blue lines - This occurs when an item has an Element ID that matches two or more items in the BrickLink catalog. Click in the Element ID box and then select the correct part or color variation from the resulting drop down menu.

Some of these blue lined items have incorrect old Item No's, caused by LEGO data showing an old PCC. You can change the PCC right away, or delete all data from this entry and add the correct item after submitting the inventory. List of old incorrect PCC's: List of Old PCC's

At the bottom of the page you can click "Add Row" to add Items already known in the catalog, but not available in LEGO data, like minifigures and sticker sheets: Step 4a.
Or you can add these items later (after submitting this initial inventory), in that case go to Step 4b.

Step 4a: Enter / Add Items
If LEGO data is available use the Inventory Comparison Tool to check which items are missing.

Besides adding items during the submission process, you can also add items after submission of the initial inventory. The easiest way to add Extra Items is after submission. For more info check: Edit Pending Inventories

You can add the following Item Types to an inventory:
  • Set
  • Part
  • Minifigure
  • Gear
  • Book
Instructions are not included in inventories. Minifigure inventories only allow parts to be added.

Explanation of Fields to enter:
You will be presented with a list of entries (1 per each unique item in the inventory). The following is a list of all of the fields:
  • PCC - Also known as Element ID: Part Color Combination Code, If a known number is entered, the Item Number and Color ID data will be filled in automatically.
  • Item No - Enter the Part, Set, Minifigure, Gear or Book number (Set number including sequential number).
  • Color ID - Enter the Color code as seen in the Color Table. Parts and Gear require either a color number or 0 for Not Applicable. For all other item types, leave the field blank.
  • Qty - Enter the quantity of the item that appears in the inventory.
  • My Notes - This field is for you to take notes on this page only. This information is not saved anywhere beyond this page.
  • Inv Section - Choose Regular, Extra, Alternate or Counterpart. Inventory Section Explanation
  • Match ID - Identifies a match between Regular item(s) and Alternate item(s). The Match ID must be the same for every item included in the pair or group. In each inventory, the Match ID should start with 1 and increase incrementally by 1 for each new match.

Step 4b: Note to Inventories Admin
Please add a note that shows:
  • The status of your inventory, like "Incomplete"/"Complete"
  • The variants you checked, like "Confirmed variants: 4079 black, 31576 bright green, 3660 orange".
  • That all new items are submitted to the catalog, like "All new items pending approval".
Step 4c: Select Source
At the foot of the page, there is a dropdown menu to select the source you are using. Sources are defined as follows:

  • Set Box/Picture - This source should only be used when set instructions, parts lists, and new or used sets are not available.

    Reliability rating: 1 (least reliable).

  • Description - This source may be used for items like torso assemblies which describe the entire item in the title.

    Reliability rating: 2 (marginally reliable).

  • Used Set - This source may be used for older sets when sealed sets are not available. If instructions are available, then the set should be built according to the instructions to verify its accuracy and the selected source should be Instructions.

    Reliability rating: 3 (somewhat reliable).

  • Instructions - This source may be used for older sets which are difficult to locate in complete condition. Using this source means going through the entire instructions and inventorying all the parts shown to be used in the instructions. If the Instructions include a Parts List, the inventory should be verified against this list and the selected source should be Parts List.

    Reliability rating: 4 (moderately reliable).

  • Parts List - Parts lists may appear in the set instructions or printed on the set box. Official data showing set contents would also be considered a parts list. This source might not accurately reflect part variants.

    Reliability rating: 5 (highly reliable).

  • Sealed Bags / Open Box - This source should only be used when a new set is bought opened (seals broken), but all bags inside the box are present and still sealed. This source might not accurately reflect part variants that were not packed sealed (by factory). This source should not be used for sealed Polybags and Foil Packs / Paper Bags from Magazines, the selected source should be Sealed Set Contents.

    Reliability rating: 6 (highly reliable).

  • Sealed Set Contents - This source should only be used when a new, unopened set is first opened and its contents inventoried.

    Reliability rating: 7 (most reliable).

  • Unknown - This identifier was added to older inventories when the option to select a source was not available. This option cannot be selected on the Add Inventory page, but it can be selected when editing pending inventories. Inventories will not be approved from an unknown source.
Step 5: Verify Items
A red error message will appear if there is a problem with the entered data. The message will indicate the entry row number and the reason for the error. Click Go Back to return to the Add Inventory page and correct the error.

A warning message will be displayed below an item if there are any duplicate entries in the inventory. You may go back and correct the mistake or submit the inventory and then make the corrections afterwards.

Step 6: Edit Pending Inventories
After submission of the initial inventory you can complete the inventory by adding, changing, removing items and add Extra Items, Counterparts and Alternate Items.
To open your pending inventory check: Edit Pending Inventories

The inventory is complete when all work is done as mentioned on the top of this page, all variants are checked and the total quantity of parts (including minifigure parts) matches the piece count printed on the box.
List of incorrect old PCC's
These are items which are shown in LEGO data with an incorrect old PCC for new released sets.
  • 3794a/b white, should be 15573 (PCC 6051511)
  • 3794a/b light bluish gray, should be 15573 (PCC 6066097)
  • 4215a/b white, should be 60581 (PCC 4558208)
  • 4215b reddish brown, should be 60581 (PCC 6008326)
  • 3063 black, should be 85080 (PCC 4567436)
  • 3063 red, should be 85080 (PCC 4567445)
  • 44375a black, should be 44375b (PCC 6058341)