What is the meaning of the error, Field Customer not found... in the log details of legacy contracts status?

The full error message would read: Field Customer not found for ariba.collaborate.contracts.SalesContractWorkspace [BaseId xxxxxxxxxxxx] where x is an alphanumeric character. 

In the Contracts.csv file within the ZIP (compressed) contracts archive file, the column header in Row 1, Column D or E reads Customer rather than Supplier.  Change this header value to Supplier to resolve the issue. 

The values in the Supplier column should be entered exactly as they appear in the ID field on the Profile tab of supplier organizations or workspaces.

Strategic Contracts