【转载】[ALV]Error for ALV - Key word SAPLSLVC

问题描述：
Short text
Field symbol has not yet been assigned.

What happened?
Error in the ABAP Application Program
The current ABAP program "SAPLSLVC" had to be terminated becaus
come across a statement that unfortunately cannot be executed.

Error analysis
You attempted to access an unassigned field symbol
(data segment 32807).

This error may occur if
- You address a typed field symbol before it has been set with
ASSIGN
- You address a field symbol that pointed to the line of an
internal table that was deleted
- You address a field symbol that was previously reset using
UNASSIGN or that pointed to a local field that no
longer exists
- You address a global function interface, although the
respective function module is not active - that is, is
not in the list of active calls. The list of active calls
can be taken from this short dump.

解决方法：
查找是否存在未定义，而使用的field字段。我是找到了一个COLOR字段，没有在表中定义，而在后面使用到了，所以导致了这个错误。

参考：
1. ALV显示超过了99列，不被支持。

2. ALV字段名错误，定义输出ALV的字段名跟内表定义的字段名不一致。

注：如果fieldcatalog里字段写成了小写，那么不会报错，只是这一列不会有数据！