Inconistencies with concepts related to taxes, allowances and charges

[idolum]

Several concepts were added to descripe taxes, allowances and charges imposed on an item which have an impact on the price of the item:

(1a) There are two concepts describing taxes as part of the price: epo-ord:TaxInformation and epo-ord:ChargeInformation

• epo-ord:TaxInformation defined as "Information about the imposition of mandatory levies required by law."
• epo-ord:ChargeInformation defined as "Information about tax, fee or duty imposed.", the additional information explicitely mentions VAT

Proposed change: Either consolidate classes or exclude taxes from epo-ord:ChargeInformation information.

(1b) Similar to this: epo:isCalculatedOn is defined "The monetary amount to which the multiplier factor is applied in calculating the amount of this allowance or charge.", but only used at epo-ord:TaxInformation

(2) The additional information for epo-cat:ChargeInformation says: "The charge can be fixed or relative to the price." But there is only an attribute epo-cat:hasPercentage allowing only expression relative charges, not fixed amounts.

Proposed change: Add a association to MonetaryValue like epo-cat:hasAmount as it is at epo-ord:TaxInformation.