ILLEGAL_FRAME_CHARACTERS SAP ABAP Runtime Error illegal frame characters

ILLEGAL_FRAME_CHARACTERS is an ABAP runtime error which you may come across when using or developing within an SAP system. See below for the standard details explaining what it means and how you can avoid or fix this runtime error.

Short Dump Classification: A - ABAP Programming Error

You can view further information about a runtme error by using transaction code ST22 which will show you this and all runtime erros that have happen in your SAP system.

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ILLEGAL_FRAME_CHARACTERS ABAP Runtime Error

Overwriting SY-ULINE or SY-VLINE was used in earlier releases to switch off the automatic frame-character identification. With the format specification NO FRAMES, this is explicitly possible and should be used accordingly. In addition, there is also the possibility to print frame characters explicitly with the constants from the type group LINE and the WRITE option AS LINE. SY-ULINE or SY-VLINE have been changed. Please see abap error for more details about the possible cause of this runtime error and how it could be avoided.

The system fields SY-ULINE or SY-VLINE have been overwritten. This is not allowed since the list structure identification then no longer functions. SY-VLINE contains a character with the hexadecimal value <runtime parameter>. SY-ULINE contains a character with the hexadecimal value <runtime parameter> at position <runtime parameter>. Please see abap error for more details about the possible cause of this runtime error and how it could be avoided.