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What is the max length of a field name (ACRONYM) in the appendix_a or RDMFieldDictionary?

In addition what is the max length of the "DDE ACRONYM"

treprfarfa-apielektron-data-dictionary
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@bas.hagen

Technically, there is no limit to the ACRONYM length in RDMFieldDictionary.

However, we recommend the max length of 10 characters for ACRONYM and 18 characters for DDE ACRONYM.

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Thanks for your answer.
Is it a cosmetic recommendation or has it also a technical background?

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It is a technical recommendation. If you plan to deploy the dictionary on TREP and non-API product download the dictionary, it may not be able to display the ACRONYM if it over the recommended value.


And please note that unlike RDMFieldDictionary, the legacy appendix_a's ACRONYM does have a limit of 255 characters.