There is a program limitation: maximum 18 columns in appraisal template or 18 part appraisers. But if we use only portal applications (BSP and Webdynpro) this limitation is not useful. It is meaningful only for transaction PHAP_ADMIN with its ALV column number limitation.
Enhancement in the end of FM HRHAP_C_BC_IT5022_WRITE supresses this 'error'.
DELETE T_RETURN
WHERE MSGTY = 'E'
AND MSGID = 'HRHAP00_TEMPLATE'
AND MSGNO = '242'.