Number of OptionalField elements in LineItem cannot exceed 10
Too many Optional Fields (
opt) have been added to the
How to Resolve
CalcTaxes request can have up to 10 Optional Fields (
opt). The Optional Fields (
opt) can be used in both the Invoice and the Line Item.
Ensure that only 10 Optional Fields (
opt) key value pairs are being used across the Invoice and the Line Items. The same Optional Field key can be used in multiple Line Items.
For more information, see Optional Fields.