Diagnosis
You have attempted to substitute an account assignment across more thanthe maximum number of levels.
Example:
Level 1: Cost center 0001 is substituted with cost center 0002.
Level 2: Cost center 0002 is substituted with cost center 0003.
...
The maximum number of levels is &V1&.

System Response
The substitution could not be performed.

Procedure
Simplify the substitution settings such that there are no more than &V1&levels.