Upon submission to the Parts Tracker, the following checks are run on the submitted file.

Error

Will result in file rejection.

• First line in the file is not 0 <description>
• Description contains invisible control characters, unused code points, the line separator character (U+2028), or the paragraph separator character (U+2029)
• Description of a part does not start with ~ and has a LDRAW_ORG type of Subpart
• Description of a part does not start with ~ and has a CATEGORY of Moved or Obsolete
• Description of a part does not start with = and has a LDRAW_ORG optional qualifier Alias
• Description of a part does not start with | or ~| and has a Name of the form tNNNN.dat (Third Party Part)
• Description ends with (Obsolete) or starts with ~Obsolete but does not have CATEGORY of Obsolete
• Missing or invalid Author statement
• Missing or invalid Name statement
• Name contains characters other than a-z, 0-9, _,-, ., \
• Name starts with x (i.e. old style unknown part number)
• Name of a part does not end with kNN if the LDRAW_ORG optional qualifier is Flexible_Section and is not in the Moved or Obsolete category
• LDRAW_ORG type is Part or Shortcut and Name ends with pNNNN or pXX(X) and Description does not end with Pattern (<optional qualifier>)
• LDRAW_ORG type is Part or Shortcut and Name ends with pNNNN or pXX(X) and does not have a "set" KEYWORD (as defined in the LDraw.org Official Parts Library Standard)
• Directory in part Name does not match the directory defined by LDRAW_ORG type (e.g. Subpart does not begin with s\)
• The submitted file filename does not match Name
• Missing or invalid LDRAW_ORG statement
• LDRAW_ORG optional qualifier is Alias and LDRAW_ORG type is not Part or Shortcut
• LDRAW_ORG optional qualifier is Flexible_Section and LDRAW_ORG type is not Part
• Missing or invalid LICENSE statement
• LICENSE is not an approved license for the LDraw.org Official Parts Library
• No 0 BFC CERTIFY CCW statement in header
• CATEGORY is not in the valid category list
• CATEGORY is Obsolete and description does not end with (Obsolete) or start with ~Obsolete
• Invalid HISTORY statement(s)
• Author listed in HISTORY not a registered author
• Part body contains meta commands other than 0 // style comments, TEXMAP commands, or BFC
• Any number exceeds 5 decimal places in types 1-5 lines
• Any number contains leading or trailing zeros, except a single zero immediately before the decimal point
• Type 2 or 5 lines not color 24
• Type 1, 3, or 4 lines that are color 24
• Type 2-5 lines with identical vertexes
• Type 1 lines with a singular matrix
• Type 3, 4, or 5 lines with collinear vertexes
• Type 4 lines that exceed 3 degrees of planar deviation
• Type 4 lines that define concave or bowtie geometry

Warnings

• A number in the description that may not have the required leading spaces
• Numbers the exceed the decimal precision recommendation for the LDRAW_ORG type but do not exceed 5 decimal places.
• An invalid PREVIEW statement for the LDraw.org Official Parts Library
• The CC-BY-2.0 License is used
• The CATEGORY is Minifig. This is a reviewer aid to ensure a more specific Minifig category is not warranted.
• A sticker color or base part in a sticker shortcut is not color 16
• Type 4 lines that exceed 1 degree but do not exceed 3 degrees of planar deviation

Automatic Corrections

• Invalid UTF-8 encoding
• All legal, horizontal whitespace characters are converted to spaces
• With the exception of the first line (the description), multiple, consecutive spaces in a line are converted to 1 space
• Multiple, consecutive blank lines will be consolidated to 1 blank line
• LDRAW_ORG type is not Unofficial_<type>, "Unofficial_" will be added
• An invalid PREVIEW statement for the LDraw.org Official Parts Library will be discarded
• Non-critical invalid header commands are discarded
• Out of order header commands are placed in proper order