(01) Mixed Group Elements are forbidden (02) Multiple Links for same Element are forbidden (03) Data Vector violates first Normal Form (04) Data Redefinition violates second Normal Form (05) Notations are not allowed in this context (06) Data Structure should have at least one ID Key (07) Data Names should be qualified by a NameSpace (08) Data Value Assignment should contain no attributes (09) Select Contruct should contain a Default case (10) Repetition should have a Termination clause (11) CDATA should be avoided (12) Multiple Inheritance is strictly forbidden (13) Element should contain a default value (14) Element should contain no more than 4 Attributes (15) Data Value does not match Data type Definition (16) Multiple Data Definitions in one Line (17) ............................................... (18) ............................................... (19) ............................................... (20) Document exceeds maximum size Limit in lines (21) Document has more than maximum allowed Elements (22) Document has more than maximum allowed Values (23) Document has more than maximum allowed Attributes (24) Document has more than maximum allowed Entities (25) Document has more than maximum allowed Structures (26) Document has more than maximum allowed Links (27) Document has more than maximum allowed Notations (28) Document has more than maximum allowed Tokens (29) Document has less than minimum allowed Comments (30) Line contains more than one Data Definition (31) Structure exceeds maximum nesting Level (32) There are more variables than attributes (33) There should be at least one Entity per Document (34) There should be at least one Link per Document (35) ................................................ (36) ................................................ (37) ................................................ (38) ................................................ (39) ................................................ (40) Document should begin with Version assignment (41) Document Name should match Structure Name (42) System assignment is missing (43) DTD Definition should have at least one Structure (44) DTD Structure should have at least one Element (45) DTD Definition should have an Attribute List (46) Document name does not conform to naming convention (47) Tag name does not conform to naming convention (48) Attribute name does not conform to naming convention (49) Entity name does not conform to naming convention (50) Link name does not conform to naming convention (51) Comment is missing in DTD Declaration (52) Comment is missing in Schema Declaration (53) Code Line is too long (54) Code Line contains multiple Tags (55) .................................................... (56) .................................................... (57) .................................................... (58) .................................................... (59) .................................................... (60) ....................................................