The Bank of Japan is considering either a tweak to or an abandonment of its guidance on the range of government bonds that it buys, according to people familiar with the discussions.

Any shift would reflect a desire by policymakers to give themselves greater flexibility as they continue with the unprecedented scale of debt purchases, the people said, asking not to be named as the talks are private.

The BOJ last adjusted the guidance in December, extending the average remaining maturity of JGBs it buys to about seven to 12 years, from seven to 10 years previously. The thinking at the time was to pull down borrowing costs across the yield curve.