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- P-codes are unique within a country (no duplication of p-codes)
- There can only be only one p-code per administrative unit. (There
- Pcodes in the COD-AB and COD-PS should on a 1:1
- At a minimum, the taxonomy (names and p-codes) should be made available
- Ideally, a P-code is a combination of letters and/or numbers (see image above) but national systems should be adopted. If no alpha code (usually it is ISO 2 letter code) is used nationally, it may need to be added to ensure its uniqueness globally.
- P-codes must be included in the COD-AB and COD-PS. It is best practice to include p-codes in other COD datasets (e.g. use spatial join/union with COD-AB)
Resources
- P-code Guidance Process to develop P-codes produced by OCHA, UNHCR, and the International Center for Remote Sensing Education.
- P-code flyer (for advocacy purposes)
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