Walmart's official Payment Methods explicitly state that gift cards cannot be used to buy other gift cards. This rule applies broadly to several types of transactions:

Gift cards (Note: you cannot use a gift card to purchase another gift card) Walmart Balance. Gift Card Terms and Conditions - Walmart Business

: The policy also prohibits using Walmart cards to purchase or load prepaid credit cards, such as Vanilla Visa or Mastercards. Rationale Behind the Policy

: Gift cards, especially third-party or Visa cards, are not high-profit items for Walmart. Allowing customers to swap one for another would often result in a net financial loss for the company after transaction fees.

: Retailers implement these "no gift card for gift card" rules to prevent money laundering and fraudulent schemes. Allowing such exchanges would make it easier for scammers to "clean" stolen funds by moving them between different types of cards.

: Walmart gift cards are designed to ensure the balance is spent on merchandise or services within the Walmart or Sam's Club ecosystem. Potential Exceptions and Alternatives

: You cannot use a Walmart gift card to buy specialty gift cards for other retailers like Amazon, Apple, or various restaurant chains.