DUBAI, Nov 30 (Reuters) - The Islamic Development Bank (IBD) has set at 45 basis points over mid-swaps the final spread of its planned five-year sukuk, according to a document sent by the banks leading the transaction and seen by Reuters.

The order book for the planned Islamic debt sale stood at $1.2 billion, the document stated. IDB had set initial pricing guidance in the 50 basis points over mid-swaps area on Tuesday, and revised the range to 45-50 bps over mid-swaps earlier on Wednesday.

The Jeddah-based triple A rated multilateral bank will price the sukuk issuance later on Wednesday, the document said.

(Reporting by Davide Barbuscia, editing by Louise Heavens) ((Davide.Barbuscia@thomsonreuters.com;))