Qual variável não pode ser modificada após a criação da campanha?

In Mercado Ads, the targeting type (automatic or custom) cannot be modified after campaign creation because it dictates the fundamental strategy for ad delivery and the algorithm's optimization method. This choice establishes the core audience approach. While daily budget and maximum CPC are adjustable intensity settings that can be fine-tuned based on performance, changing the targeting would necessitate a complete reconfiguration of the campaign's machine learning and accumulated data. Such a change would compromise metric consistency and ad delivery stability, effectively requiring the advertiser to end the current campaign and create a new one to implement a different targeting approach.