Some currencies, such as XLM, utilize a memo to determine which user a transaction (ex. crypto deposit) should be associated with.
When depositing crypto assets into your Newton wallet, always ensure to use the correct tag or memo (if applicable) presented in the deposit details page along with your deposit address.
Many exchanges utilize one or two deposit addresses for certain currencies across their entire user base, and thus require the extra information to determine who the deposit is meant for. When withdrawing crypto assets from Newton to another wallet, first verify whether or not the destination address has a tag or memo. If the destination address does not require a tag or memo, then you can enter any number (or leave the field blank). If the destination address does require one, please ensure you have entered the correct tag or memo!