Error in table/function declaration

What causes this issue?

The syntax check found an error in the entry for a table or function.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

A table is denoted by the keyword TABLE, the language-independent table
name and a list of arguments. Each argument consists of <formal
parameter = arg>, for example:
TABLE TEST_TAB(COLOR='red', PRICE=PRICE_1)
Here, COLOR and PRICE are formal parameters of the table, 'red' is a
constant, and PRICE_1 is a characteristic-specific variable.
A function is denoted by the keyword FUNCTION. The other entries for a
function are the same as for a table, for example:
FUNCTION TEST_FUN(COLOR='red', PRICE=PRICE_1)
Check the table or function entry at the cursor. Correct the error if
required. See also other possible causes of error (messages).
Special functions that read or change other configuration data
internally are identified with the keyword PFUNCTION. (The 'P' stands
for procedure.) These functions can only be used in procedural
dependencies, such as procedures and non-declarative selection
conditions. The argument list of a PFUNCTION can be empty.

Error message extract from SAP system. Copyright SAP SE.