Policy dictated that Nabu should be ignored, that the attempt must be made to replace his worship, even in Borsippa, by that of Marduk.

Viewed in this light, Hammurabi's establishment of the Marduk cult in Borsippa assumes a peculiar significance.

It meant that Borsippa was to be incorporated as part of Babylon, and that Marduk was henceforth to take the place occupied by Nabu.

In order to emphasize this, Hammurabi actually transfers the name of Nabu's temple in Borsippa, E-Zida, to the one erected by him at that place to Marduk.

Did he perhaps entirely suppress the worship of Nabu at Borsippa?
It would almost appear so from Agum's utter omission of Nabu.