houdini list fragment bug, mutation effective payload. schema at https://github.com/inp-net/churros/blob/4a152dd5fd673bda965b1fd26de193328f8d8313/packages/app/schema.graphql

mutation.gql

mutation DeleteContribution($user: UID!, $option: LocalID!) {
  deleteContribution(user: $user, option: $option) {
    ...MutationErrors
    ... on MutationDeleteContributionSuccess {
      data {
        ...List_UserContributions_Pending_remove
        ...List_UserContributions_Paid_remove
        ...List_UserContributions_Options_insert
        id
      }
    }
    __typename
  }
}

fragment MutationErrors on ErrorInterface {
  __typename
  ... on Error {
    message
  }
  ... on ZodError {
    fieldErrors {
      path
      message
    }
  }
  ... on NotFoundError {
    message
  }
  __typename
}

fragment List_UserContributions_Pending_remove on ContributionOption {
  id
}

fragment List_UserContributions_Paid_remove on ContributionOption {
  id
}

fragment List_UserContributions_Options_insert on ContributionOption {
  canMarkAsPaid
  paidByUser: paidBy
  localID
  ...ItemContribution
  id
}

fragment ItemContribution on ContributionOption {
  name
  canMarkAsPaid
  localID
  price
  paysFor {
    ...AvatarStudentAssociation
    id
  }
  offeredIn {
    ...AvatarSchool
    id
  }
  id
  __typename
}

fragment AvatarStudentAssociation on StudentAssociation {
  name
  uid
  pictureURL
  id
  __typename
}

fragment AvatarSchool on School {
  pictureURL
  name
  uid
  id
  __typename
}

sorry for the enormous schema, don't hesistate to ask for a truncated version if you need one ;)