SAP Note 26393 - IM: Maintaining coding masks not possible OR ...

Symptom:

You cannot create or change coding masks for the coding of program positions in Customizing for investment programs (--> AP 024).

Or

When you create an investment program position using IM11 or IM22, the system issues error message AP 019, which is incorrect: Length of entry is not correct: &1

Or

When you create an investment program position using IM11 or IM22, the ABAP/4 runtime error DATA_LENGTH_0 occurs in the program SAPLAIPC.

Or

When you call the depreciation simulation (RASIMU02) or the primary cost planning (RAKOPL02), the ABAP/4 runtime error
ASSIGN_LENGTH_0 or DATA_LENGTH_0
occurs in the program SAPLAIPC.

Other terms

SAPL0IM3, edition, coding mask, investment program, program position, depreciation simulation, primary cost planning, EAP024, EAP019

Reason and Prerequisites

To be able to create coding masks for investment program positions, an entry must already exist in the table TAI01 and this entry must contain the allowed special character. However, this entry is missing for reasons that cannot be understood.

Solution
Create the missing entry in the table TAI01 using the program ZATAI01I. Create the program as an executable program in a customer-specific development package and execute it once in the relevant system or client.