Restrictions & Common Errors
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Note the following restrictions and common errors.
Restrictions
Common Errors
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Last updated 2025-08-25 UTC.
[null,null,["Last updated 2025-08-25 UTC."],[[["\u003cp\u003eCampaigns using campaign experiments require a dedicated, non-shared budget.\u003c/p\u003e\n"],["\u003cp\u003eOnce a budget is explicitly shared, it cannot be reverted to a non-shared state.\u003c/p\u003e\n"],["\u003cp\u003eAccounts have a maximum limit on the number of budgets they can contain.\u003c/p\u003e\n"],["\u003cp\u003eYou cannot remove a budget currently assigned to active or paused campaigns.\u003c/p\u003e\n"],["\u003cp\u003eCampaigns with experiments cannot utilize budgets shared with other campaigns.\u003c/p\u003e\n"]]],[],null,["# Restrictions & Common Errors\n\nNote the following restrictions and common errors.\n\nRestrictions\n------------\n\n- Any campaign that has [campaign\n experiments](//support.google.com/google-ads/answer/6318742) enabled must have its own non-shared budget.\n\nCommon Errors\n-------------\n\n| Error | Description |\n|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [`CampaignBudgetError.CANNOT_UPDATE_CAMPAIGN_BUDGET_TO_IMPLICITLY_SHARED`](/google-ads/api/reference/rpc/v21/CampaignBudgetErrorEnum.CampaignBudgetError#cannot_update_campaign_budget_to_implicitly_shared) | Indicates that you tried to set the [explicitly_shared](/google-ads/api/reference/rpc/v21/CampaignBudget#explicitly_shared) field of a budget from `true` to `false` in an `update` operation. Once a budget is explicitly shared (`explicitly_shared = true`), you cannot change [explicitly_shared](/google-ads/api/reference/rpc/v21/CampaignBudget#explicitly_shared) back to `false`. |\n| [`ResourceCountLimitExceededError.ACCOUNT_LIMIT`](/google-ads/api/reference/rpc/v21/ResourceCountLimitExceededErrorEnum.ResourceCountLimitExceededError#account_limit) | Indicates you've reached the maximum number of budgets in an account. |\n| [`CampaignError.CAMPAIGN_CANNOT_USE_SHARED_BUDGET`](/google-ads/api/reference/rpc/v21/CampaignErrorEnum.CampaignError#campaign_cannot_use_shared_budget) | The campaign to which you're trying to add the budget is using campaign experiments, and the budget is already being used by another campaign. |\n| [`CampaignBudgetError.CAMPAIGN_BUDGET_IN_USE`](/google-ads/api/reference/rpc/v21/CampaignBudgetErrorEnum.CampaignBudgetError#campaign_budget_in_use) | You're trying to remove a budget associated with one or more active or paused campaigns. |"]]
