Sparkpost error when unticking 'On Hold?' on contact email

[simonjohnparker]

Hi,

We had a contact that was 'On Hold' due to a bounced email. We corrected, and then unticked the 'On Hold? from contact email section:

Clicking save with it unticked seems to be successful from a CiviCRM perspective, but throws a sparkpost error:

Any idea why this might be happening?

[sunilpawar]

@simonjohnparker that mean on hold email not found in 'suppression-list' at sparkpost. Either its already removed from suppression-list or on-hold in civicrm due do other reason.