(a) Requirements. Except as provided in paragraph (b) of this section, the Center director may permit the filing of one entry summary for merchandise the subject of separate entries if:

(1) The merchandise has the same country of exportation, and the same country of origin,

(2) The merchandise arrives by land, by the same vessel or by the same air carrier,

(3) The merchandise is consigned to the same consignee,

(4) The time between the date of the first entry and the date of the last entry does not exceed 1 week,

(5) The entry summary document is filed within 10 working days from the date of the first entry, and

(6) Each entry is identified separately by entry number on the entry summary.

(b) Merchandise not eligible. One entry summary shall not be used for multiple entries of the following:

(1) Quota-class merchandise,

(2) Prohibited merchandise,

(3) Merchandise subject to restrictions which require processing and documentation more frequently than on a weekly basis,

(4) Merchandise for which liquidation has been withheld, and

(5) Merchandise classifiable under the same Harmonized Tariff Schedule of the United States subheading number, to the eight-digit level having different rates of duty for which entries or immediate transportation entries have been filed. However, this provision is not applicable in the following circumstances:

(i) Entries. Entries may be consolidated if the time of entry is:

(A) Before the date of change in rate of duty, or

(B) On or after the date of change in rate of duty.

(ii) Immediate transportation entries. Immediate transportation entries may be consolidated if the date of acceptance is:

(A) Before the date of change in the rate of duty, or

(B) On or after the date of change in rate of duty.

(c) Entry documentation not in proper form. If an entry summary covering multiple entries refers to entry documentation which is not in proper form, the entry summary and the entry documentation shall be returned for correction.