MMBE sql trace

I have a problem. MMBE runs fast on all materials except for one. Based on the sql trace comparison, I found, for that material, the table "EKBE" is also included in the select stmts unlike for other materials, and the fetch / open commands takes a lot of time for that "EKBE" table. Digging furthur, that select statement occurs in the function module: MMPUR_EKBE_ARRAY_READ. But I searched the websites regarding this, yet to no avail. Please help.

SELECT * FROM "EKBE" WHERE "MANDT" = :A0 AND "EBELN" = :A1 AND "EBELP" = :A2 OR "MANDT" = :A3 AND "EBELN" = :A4 AND "EBELP" = :A5 OR "MANDT" = :A6 AND "EBELN" = :A7 AND "EBELP" = :A8 OR "MANDT" = :A9 AND "EBELN" = :A10 AND "EBELP" = :A11 OR "MANDT" = :A12
AND "EBELN" = :A13 AND "EBELP" = :A14
This is the sql statement seen in the beginning of sql trace list, taking lot of time when running MMBE.
Why is that, the phrase "MANDT" = :A0 AND "EBELN" = :A1 AND "EBELP" = :A2 being repeated many times in the sql statement?
At the end of the sql trace list, the sql statement SELECT * FROM "EKBE" WHERE "MANDT" = :A0 AND "EBELN" = :A1 AND "EBELP" = :A2 runs pretty fast.
Please help.

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