SAP CML_MIG_BUFFER Table DDIC buffering (migration) Table data and field list

CML_MIG_BUFFER is a standard SAP Table which is used to store Table DDIC buffering (migration) data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.

The CML_MIG_BUFFER table consists of various fields, each holding specific information or linking keys about Table DDIC buffering (migration) data available in SAP. These include MIG_TYPE (Single-Character Indicator), TABNAME (Table Name), FIELDNAME (Field Name), LANGU (Language Key)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .

CML_MIG_BUFFER table Technical Details:

Delivery Class: L - Table for storing temporary data, is delivered empty
Display/Maintenance via tcode SM30: Display/Maintenance Allowed but with Restrictions
SAP enhancement categories: Can be enhanced (character-type or numeric)

SAP CML_MIG_BUFFER table fields - Full list of fields found in SAP data dictionary

Looking for S/4HANA specific information? Click here to explore the details, fields and extensibility available for this table in the SAP S/4HANA version of the CML_MIG_BUFFER table. Also check whether the table still exists or has been transformed into a CDS view as part of the HANA simplifications.

Field	Description	Data Element	Data Type	length (Dec)	Check table	Conversion Routine	Domain Name	MemoryID	SHLP
MANDT	Client	MANDT	CLNT	3	Assigned to domain		MANDT
MIG_TYPE	Single-Character Indicator	CHAR1	CHAR	1			CHAR1
TABNAME	Table Name	TABNAME	CHAR	30	Assigned to domain		AS4TAB	DTB
FIELDNAME	Field Name	FIELDNAME	CHAR	30	Assigned to domain		FDNAME	DFD
LANGU	Language Key	DDLANGUAGE	LANG	1	Assigned to domain	ISOLA	SPRAS
XPOSITION	Position of the field in the table	TABFDPOS	NUMC	4			AS4POS
XOFFSET	Offset of a field	DOFFSET	NUMC	6			DOFFSET
DOMNAME	Domain name	DOMNAME	CHAR	30	Assigned to domain		DOMNAME		DD_DOMA
ROLLNAME	Data element (semantic domain)	ROLLNAME	CHAR	30	Assigned to domain		ROLLNAME	ROL	DD_DTEL
CHECKTABLE	Table Name	TABNAME	CHAR	30	Assigned to domain		AS4TAB	DTB
LENG	Length (No. of Characters)	DDLENG	NUMC	6			DDLENG
INTLEN	Internal Length in Bytes	INTLEN	NUMC	6			DDLENG
OUTPUTLEN	Output Length	OUTPUTLEN	NUMC	6			DDLENG
DECIMALS	Number of Decimal Places	DECIMALS	NUMC	6			DDLENG
DATATYPE	ABAP/4 Dictionary: Screen data type for Screen Painter	DYNPTYPE	CHAR	4			DATATYPE
INTTYPE	ABAP data type (C,D,N,...)	INTTYPE	CHAR	1			INTTYPE
REFTABLE	Table for reference field	REFTABLE	CHAR	30	Assigned to domain		AS4TAB
REFFIELD	Reference field for currency and qty fields	REFFIELD	CHAR	30	Assigned to domain		FDNAME
PRECFIELD	Name of included table	PRECFIELD	CHAR	30	Assigned to domain		FDNAME
AUTHORID	Authorization class	AUTHORID	CHAR	3			AUTHORID
MEMORYID	Set/Get parameter ID	MEMORYID	CHAR	20	Assigned to domain		MEMORYID
LOGFLAG	Indicator for writing change documents	LOGFLAG	CHAR	1			AS4FLAG
MASK	Template (not used)	AS4MASK	CHAR	20			AS4MASK
MASKLEN	Template length (not used)	MASKLEN	NUMC	4			MASKLEN
CONVEXIT	Conversion Routine	CONVEXIT	CHAR	5			CONVEXIT
HEADLEN	Maximum length of heading	HEADLEN	NUMC	2			SCRLEN
SCRLEN1	Max. length for short field label	SCRLEN_S	NUMC	2			SCRLEN
SCRLEN2	Max. length for medium field label	SCRLEN_M	NUMC	2			SCRLEN
SCRLEN3	Max. length for long field label	SCRLEN_L	NUMC	2			SCRLEN
FIELDTEXT	Short Description of Repository Objects	AS4TEXT	CHAR	60			AS4TEXT
REPTEXT	Heading	REPTEXT	CHAR	55			REPTEXT
SCRTEXT_S	Short Field Label	SCRTEXT_S	CHAR	10			SCRTEXT_S
SCRTEXT_M	Medium Field Label	SCRTEXT_M	CHAR	20			SCRTEXT_M
SCRTEXT_L	Long Field Label	SCRTEXT_L	CHAR	40			SCRTEXT_L
KEYFLAG	Identifies a key field of a table	KEYFLAG	CHAR	1			KEYFLAG
LOWERCASE	Lowercase letters allowed/not allowed	LOWERCASE	CHAR	1			AS4FLAG
MAC	Flag if search help is attached to the field	DDSHATTACH	CHAR	1			DDBOOL
GENKEY	Flag (X or Blank)	AS4FLAG	CHAR	1			AS4FLAG
NOFORKEY	Flag (X or Blank)	AS4FLAG	CHAR	1			AS4FLAG
VALEXI	Existence of fixed values	VALEXI	CHAR	1			AS4FLAG
NOAUTHCH	Flag (X or Blank)	AS4FLAG	CHAR	1			AS4FLAG
SIGN	Flag for sign in numerical fields	SIGNFLAG	CHAR	1			AS4FLAG
DYNPFLD	Flag: field to be displayed on the screen	DYNPROFLD	CHAR	1			AS4FLAG
F4AVAILABL	Does the field have an input help	DDF4AVAIL	CHAR	1			DDBOOL
COMPTYPE	DD: Component Type	COMPTYPE	CHAR	1			COMPTYPE
LFIELDNAME	Field name	FNAM_____4	CHAR	132			DYNFNAM
LTRFLDDIS	Basic write direction has been defined LTR (left-to-right)	DDLTRFLDDI	CHAR	1			DDBOOL
BIDICTRLC	DD: No Filtering of BIDI Formatting Characters	DDBIDICTRL	CHAR	1			DDBOOL
OUTPUTSTYLE	DD: Output Style (Output Style) for Decfloat Types	OUTPUTSTYLE	NUMC	2			OUTPUTSTYLE
NOHISTORY	DD: Flag for Deactivating Input History in Screen Field	DDNOHISTORY	CHAR	1			DDBOOL
AMPMFORMAT	DD: Indicator whether AM/PM time format is required	DDAMPMFORMAT	CHAR	1			DDAMPMFORMAT

Key field

Non-key field

< CML_ARC_DOC_ADMH - Admin. Table for Reorganization of Loan Document Data CMMDA - Communication Structure: Delivery Addresses in MM >

How do I retrieve data from SAP table CML_MIG_BUFFER using ABAP code

The following ABAP code Example will allow you to do a basic selection on CML_MIG_BUFFER to SELECT all data from the table
DATA: WA_CML_MIG_BUFFER TYPE CML_MIG_BUFFER.

SELECT SINGLE *
FROM CML_MIG_BUFFER
INTO CORRESPONDING FIELDS OF WA_CML_MIG_BUFFER
WHERE...

How to access SAP table CML_MIG_BUFFER

Within an ECC or HANA version of SAP you can also view further information about CML_MIG_BUFFER and the data within it using relevant transactions such as

SE11 (ABAP Dictionary Maintenance)
SM30 (Maintain Table Data)
SE80 (Object Navigator)
SE16 (Data Browser).