When importing CAMT.053 bank statement, error Bank Account Management has no entry with bank key

When importing CAMT.053 slope statement, mistake Bank Account Management has nary introduction with slope cardinal xx adjacent though config for slope cardinal and slope relationship is correct.  Manual alteration of xml record to determination the slope cardinal (sort code) successful to the BIC tag and past it volition upload.  Has anyone travel crossed this?  its with Lloyds slope who accidental they cannot amend the format of the xml from their side