# Updating Custom Field with DateTime format value

**URL:** <https://integration.keap.com/t/updating-custom-field-with-datetime-format-value/81748>\
**Category:** API Q&A\
**Created:** [January 19, 2021, 1:14am UTC](https://integration.keap.com/t/updating-custom-field-with-datetime-format-value/81748 "2021-01-19T01:14:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Vadim\_Stakhnyuk](https://avatars.discourse-cdn.com/v4/letter/v/a88e57/32.png) [@Vadim\_Stakhnyuk](https://integration.keap.com/u/Vadim_Stakhnyuk)\
**Post date:** [January 19, 2021, 1:14am UTC](https://integration.keap.com/t/updating-custom-field-with-datetime-format-value/81748/1 "2021-01-19T01:14:03Z")

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I am having an issue with setting a custom field that has a DateTime value. I have found forum requests for this issue, but I have no been able to solve my issue when following previous responses from IFS engineers.

I have tried multiple dateTime formats and none of them have worked.

How would I be able to resolve this issue to be able to update my custom field correctly?

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<div class="post-metadata">

**Author:** ![TomScott](https://sea1.discourse-cdn.com/flex019/user_avatar/integration.keap.com/tomscott/32/67_2.png) [@TomScott](https://integration.keap.com/u/TomScott)\
**Post date:** [January 19, 2021, 11:46pm UTC](https://integration.keap.com/t/updating-custom-field-with-datetime-format-value/81748/2 "2021-01-19T23:46:57Z")

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DateTimes should conform to [ISO 8601 - Wikipedia](https://en.wikipedia.org/wiki/ISO_8601), ex: “2000-01-13T01:01:01.001Z”