Worked on the hiero-ledger/hiero-sdk-cpp repository to enhance transaction processing by ensuring user-defined TransactionId values are preserved throughout the workflow. Addressed the need for deterministic identifiers by introducing a flag in the C++ codebase that prevents regeneration of TransactionId when explicitly set by users. This approach improved auditability and integration reliability, supporting compliant tracing and reducing the risk of identifier drift during reconciliation with external systems. The solution demonstrated careful handling of user input and regression-safe engineering, leveraging skills in C++ development, software engineering, and transaction management to deliver more reliable and traceable transaction workflows within the SDK.