How To Fix SDDL_PARSER_MSG518 - Function "&1" cannot be used in arithmetic expressions

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 518

• Message text: Function "&1" cannot be used in arithmetic expressions

What causes this issue?

Time stamps cannot be used in arithmetic expressions, since calculations
of this type cannot make automatic adjustments (for example, for minutes
or calendar days).

How to fix this error?

The alternative is to use functions that handle time stamps correctly.
UTCL_CURRENT()
UTCL_ADD_SECONDS(utcl,seconds)
UTCL_SECONDS_BETWEEN(utcl1,utcl2)
TSTMP_IS_VALID(tstmp)
TSTMP_CURRENT_UTCTIMESTAMP()
TSTMP_SECONDS_BETWEEN(tstmp1,tstmp2,on_error)
TSTMP_ADD_SECONDS(tstmp,seconds,on_error)

Error message extract from SAP system. Copyright SAP SE.