eBay Trading APIVersion 1031

Applicable values for GetCategorySpecificsResponse.Recommendations.NameRecommendation.ValidationRules.ValueType

CustomCode
(out) Reserved for future use.
Date
(out) This value indicates that the recommended Item Specific is a date value, which will should use the date format specified in the ValueFormat field.
Decimal
(out) This value indicates that the recommended Item Specific is a non-integer number with a decimal point, like 3.14159. Item Specifics are not expressed as float or double types.

Note: Starting with Version 945 and going forward, the Numeric data type will be returned for whole integer values (no decimal), and the Decimal data type will be returned for numbers with decimal points. For the Version 943 WSDL and older, Decimal will continue being returned for all numeric values (with or without decimal points).
EAN
(out) This value indicates that the recommended Item Specific is a European Article Number (EAN). EANs contain 13 characters.
ISBN
(out) This value indicates that the recommended Item Specific is an International Standard Book Number (ISBN) value. ISBNs can contain either 10 or 13 characters.
Text
(out) This value indicates that the recommended Item Specific is free-form text. This is the default value. The maximum length of a text-based Item Specific is 50 characters.
UPC
(out) This value indicates that the recommended Item Specific is a Universal Product Code (UPC) value. UPCs contain 12 characters.
(Not all values in ValueTypeCodeType apply to this field.)