Possible reasons:

• a base asset must have a Base fee or a non_base asset must have a NonBase fee, but not any other combination
• amount must be positive
• could not parse fee_amount
• custody vendor not configured
• fee_amount must be greater than or equal to zero
• tag_memo is not supported for this asset
• tag_memo is required for this asset
• transaction with this external_id was already attempted
• unknown asset_code

Not authenticated

the authority account cannot be used as the account for a transaction

Not found

user is archived

The request body is valid JSON but does not match the expected schema.

Possible reasons:

• attempt to verify existing contract failed
• could not begin transactional query
• database error
• failed to build contract
• failed to commit database transaction
• failed to create transaction
• failed to get asset code
• failed to get recipient user address
• failed to get recipient user vault
• failed to get treasury user
• failed to look up connector
• failed to look up recipient user
• failed to save contract
• treasury user is not configured