Allowance_self explanatory.

Charge line items_charge is related to all line items in a message as a default charge. it may be overridden per line item.

Charge message_charge is related to the entire message.

No allowance_self explanatory.

Maximum_highest possible value; maximum; not exceeding; up to.

Allowance line items_allowance is related to all line items in a message as a default allowance. it may be overridden per line item.

Plus/minus (percentage)_the greater/lesser value expressed in percentage.

Plus (amount)_the greater value expressed in amount.

Charge per call of_self explanatory.

About_to be construed as allowing a difference not exceeding 10 % more or 10 % less than the amount which it refers.

Adjustment_self explanatory.

Minus (amount)_the lesser value expressed in amount.

Allowance message_allowance is related to the entire message.

Line item charge_charge is related to a line item. it can override a default charge.

Line item allowance_allowance is related to a line item. it can override a default allowance.

No charge_self explanatory.

Plus (percentage)_the greater value expressed in percentage.

Exact_indicates that this is the exact amount.

Allowance per call of_self explanatory.

Charge_self explanatory.

No allowance or charge_no increases or reduction in price (list or stated) are included.

Plus/minus (amount)_the greater/lesser value expressed in amount.

Minus (percentage)_the lesser value expressed in percentage.