# Common Problems & Patterns

- [Tracking Components](https://docs.propellerheads.xyz/integrations/indexing/common-problems-and-patterns/tracking-components.md): Keeping track of a protocols components.
- [Normalizing relative ERC20 Balances](https://docs.propellerheads.xyz/integrations/indexing/common-problems-and-patterns/normalizing-relative-erc20-balances.md): Converting relative balance changes into absolute balance values.
- [Tracking Contract Storage](https://docs.propellerheads.xyz/integrations/indexing/common-problems-and-patterns/tracking-contract-storage.md): Indexing contract storage.
- [Custom protobuf models](https://docs.propellerheads.xyz/integrations/indexing/common-problems-and-patterns/custom-protobuf-models.md): Custom intermediate message types.


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