> For the complete documentation index, see [llms.txt](https://docs.cleartax.in/cleartax-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cleartax.in/cleartax-docs/invoicing-api/invoicing-api-reference/resources-and-master.md).

# Resources and Master

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[Port Master](/cleartax-docs/invoicing-api/invoicing-api-reference/resources-and-master/port-master.md)
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[Country Master](/cleartax-docs/invoicing-api/invoicing-api-reference/resources-and-master/country-master.md)
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[State Master](/cleartax-docs/invoicing-api/invoicing-api-reference/resources-and-master/state-master.md)
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[Currency Master](/cleartax-docs/invoicing-api/invoicing-api-reference/resources-and-master/currency-master.md)
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[Unit Master](/cleartax-docs/invoicing-api/invoicing-api-reference/resources-and-master/unit-master.md)
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[Document Types](/cleartax-docs/invoicing-api/invoicing-api-reference/resources-and-master/document-types.md)
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[Supply Types](/cleartax-docs/invoicing-api/invoicing-api-reference/resources-and-master/supply-types.md)
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