Chainlink Functions - ABI Encoding/Decoding
Challenge: Our project utilized Chainlink functions that returned multiple values, necessitating a complex data handling process between off-chain requests and on-chain responses through abi.encoding() and abi.decoding().
Solution: We overcame this by developing robust encoding and decoding functions that ensured accurate data translation and integrity between the off-chain and on-chain environments, streamlining the data exchange process. Also Tested it using the tutorial/simulation scripts provided by chainlink.

Biconomy Account Abstraction
Challenge: Integrating Biconomy's account abstraction presented several bugs and errors, especially concerning the handling of sponsored transactions for users.
Solution: We addressed these challenges by closely following their developer docs, conducting extensive debugging sessions, and implementing a refined error-handling framework to ensure smoother transaction processing for users.

Chainlink CCIP - Liquidity Management for Reward Tokens
Challenge: The Chainlink Cross-Chain Interoperability Protocol (CCIP) was used for managing custom reward tokens, which posed challenges in liquidity management since these tokens were not supported on Chainlink’s off-ramp services.
Solution: To solve this, we used chainlink message passing to transfer the liquidity of the desired tokens.

Morph/XDC Support - Bridge Liquidity Management
Challenge: The absence of bridge support for Morph/XDC necessitated a unique approach to managing the liquidity of the funds involved in the transactions.
Solution: We managed it by creating our own small bridge to transfer the liquidity and add support for these networks.