You do not have authorization for company code &1

What causes this issue?

The following company-code authorizations are required:
for the cash management position and account clearing: F_FDSB_BUK
for the liquidity forecast: F_FDSR_BUK
for individual record processing: F_FDES_BUK

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.