Critical AMM Issue in XRP Ledger Unveiled by RippleX – Potential Impact on Trading Revealed

Table of Contents


  • RippleX successfully addresses a critical technical issue in the XRP Ledger’s Automated Market Maker (AMM).
  • The problem involved the execution of multiple AMM transactions in the same ledger, especially when the trading fee was below 0.01%.
  • The solution introduces a new method to correctly identify and manage default fields within the AMM’s inner structure.

RippleX, the development division of Ripple Labs, recently tackled a crucial technical issue in the XRP Ledger’s Automated Market Maker (AMM) without affecting its launch. The issue surfaced during extensive integration testing aimed at ensuring the long-term functionality of the AMM.

RippleX engineers identified a specific scenario where multiple AMM transactions could not execute in the same ledger. This problem was most noticeable when the trading fee was below 0.01%. In a detailed statement, RippleX explained, “In extended integration testing to ensure the AMM performs as intended over time, we identified an issue that could prevent multiple AMM txs from executing in the same ledger.”

The core issue involved the handling of specific default fields in AMM inner objects. Normally, these fields facilitate seamless transaction execution. However, when an AMM was created with a trading fee of less than 0.01%, these fields prevented immediate transaction success. RippleX’s proposed solution involved a new method for correctly identifying and managing default fields within the AMM’s inner structure. This fix was implemented in both the AMM code and the core ledger code, ensuring a comprehensive solution to the issue.

RippleX Gets to Work, and the Error is Already Fixed, Without Major Inconveniences

The official statement highlighted the nature of the fix: “The proposed fix provides a way for an inner object to correctly identify default fields and is implemented in both the core ledger and AMM code.” The fix was crucial for maintaining the operational integrity of the AMM on the XRP Ledger. Although the issue did not impact ledger stability, the division emphasized the importance of this fix to ensure consistent performance, especially in exceptional scenarios.


The company assured that the AMM’s behavior was not affected and remains correct. They stated, “Nonetheless, the fix can eliminate edge cases and ensure the AMM always performs as expected.”

Automated Market Makers (AMMs) are crucial in the decentralized finance (DeFi) sector, especially on platforms like the XRP Ledger. These decentralized exchange systems use algorithmic pricing to facilitate asset trading, improving liquidity and trading efficiency. The successful activation of the XLS-30D amendment is essential, allowing XRP holders to serve as liquidity providers and earn passive income.

Currently, 30 out of 35 validators (85.71%) voted for the amendment activation. If this trend continues, the AMM feature is expected to be activated on the XRP Ledger on February 14 at 11:22:20 AM UTC. At the time of writing, XRP was trading at $0.504, with a 2.2% increase in the last 24 hours.


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