2707974 - Variant <Variant_name> of program SBAL_DELETE is not the current version

SBAL_DELETE report has been scheduled as a background job, and Job gets canceled with following Job Log:
  Job log         Time            Message text uncoded
  dd.mm.yyyy hh:mm:ss    Job started
  dd.mm.yyyy hh:mm:ss    Step 001 started (program SBAL_DELETE, variant <Variant_name>, user ID <name>)
  dd.mm.yyyy hh:mm:ss    Variant <Variant_name> of program SBAL_DELETE is not the current version
  dd.mm.yyyy hh:mm:ss    Job cancelled

When you try to display affected SBAL_DELETE variant, you’re getting error:

  Variant <Variant_name> of program SBAL_DELETE is not the current version
  Message no. DB634

  Diagnosis
The variant <Variant_name> is to be imported for the report SBAL_DELETE. SELECT-OPTIONS or PARAMETER in the report has changed significantly since the variant was created. This means that the type or length of individual  parameters no longer match or that SELECT-OPTIONS was switched for PARAMETER (or vice versa). Some of these changes are so great that the variant can no longer be imported or that the import causes runtime errors.

SAP NetWeaver system

RSVARDOC_610, SBAL_DELETE, variant, is not the current version, DB634, Message no. DB634, Variant of program SBAL_DELETE is not the current version,
SAP&ARCHIVING, Z_SBAL, SAP&S4HREORG , KBA , BC-SRV-BAL , Basis Application Log , BC-ABA-TO , Selection Variants, Selection Screen Services , Problem