Cost Basis is a background process that calculates the cost basis and cost layers for all crypto transactions which involve a "Sent" coin and/or a "Fee" coin (trades, transfers and withdrawals). It is the cost basis process that is the first step in creating Journal Entries in your SoftLedger system, and when run fully can calculate your gains and losses on crypto transactions throughout the system. The Cost Basis function is triggered when clicking the Run Cost Basis button at the top of the Crypto Transactions screen:

If cost basis is currently running you will see a progress bar on the Crypto->Transactions page, similar to the following:

If cost basis has completed successfully you should see no progress or error message at the top of the Crypto Transaction List. In addition, all of your Trade/Transfer/Withdrawal transactions should have a value in the "Sent Cost Basis" and "Fee Cost Basis"(If they have a fee coin) columns.

In some cases you will find that the cost basis process has failed. In this case you will see an error notification at the top of the crypto transaction list:

This error should provide detailed information to assist resolving the cost basis error.

For detailed instructions of resolving typical cost basis errors see this article How do I resolve cost basis errors?

Cost basis warning
If you see this warning, and hover over it, it will notify you that cost basis may be inaccurate and needs to run.

See the Immaterial Threshold Setting article to review how to automatically fix rounding errors involved with crypto transaction recording.