/sap-abap-cds

ABAP CDS Troubleshooting Guide

Common errors, warnings, and solutions for ABAP CDS development.

Error: SD_CDS_ENTITY105 - Missing Reference Information

Problem

Elements with data types CURR (currency amount) or QUAN (quantity) require reference information.

Error Message:

"Reference information is missing or data type is incorrect"

Cause

Currency and quantity fields must reference their unit field for semantic correctness.

Solution 1: Add Semantics Annotations

-- For currency fields
@Semantics.currencyCode: true
waers,
@Semantics.amount.currencyCode: 'waers'
netwr,

-- For quantity fields
@Semantics.unitOfMeasure: true
meins,
@Semantics.quantity.unitOfMeasure: 'meins'
menge

Solution 2: Import Reference from Joined Table

define view Z_WITH_CURRENCY as select from vbak as v
  inner join t001 as c on v.bukrs = c.bukrs
{
  v.vbeln,
  c.waers,
  @Semantics.amount.currencyCode: 'waers'
  v.netwr
}

Solution 3: Block Inherited Annotations

If reference comes from base view but causes issues:

@Metadata.ignorePropagatedAnnotations: true
define view Z_CLEAN_VIEW as select from Z_BASE
{
  field1,
  @Semantics.currencyCode: true
  local_waers,
  @Semantics.amount.currencyCode: 'local_waers'
  amount
}

Warning: Cardinality Mismatch

Problem

Specified cardinality doesn't match actual data relationships.

Warning Message:

"The cardinality of association '_Assoc' may not match the data"

Cause

• [0..1] specified but multiple records exist
• [1..*] specified but zero records possible

Solution

Define cardinality matching actual data:

-- If truly optional single record
association [0..1] to target as _Assoc on ...

-- If multiple records possible
association [0..*] to target as _Assoc on ...

-- If always exactly one
association [1..1] to target as _Assoc on ...

Verification

" Check actual cardinality in data
SELECT parent_key, COUNT(*) AS cnt
  FROM child_table
  GROUP BY parent_key
  HAVING COUNT(*) > 1
  INTO TABLE @DATA(lt_multiple).

IF lt_multiple IS NOT INITIAL.
  " Multiple records exist - use [0..*] or [1..*]
ENDIF.

Error: View Activation Failed

Problem

CDS view cannot be activated.

Common Causes and Solutions

1. SQL View Name Too Long

-- Error: SQL view name exceeds 16 characters
@AbapCatalog.sqlViewName: 'ZVERY_LONG_VIEW_NAME_HERE'

-- Solution: Shorten to max 16 characters
@AbapCatalog.sqlViewName: 'ZV_SHORT_NAME'

2. Duplicate SQL View Name

-- Another view already uses this SQL view name
-- Solution: Use unique name
@AbapCatalog.sqlViewName: 'ZV_UNIQUE_123'

3. Invalid Field Name

-- Reserved word or invalid characters
{
  select as Select  -- 'select' is reserved

-- Solution: Use valid alias
  select as SelectionField
}

4. Type Mismatch in UNION

-- Fields must have compatible types
define view Z_UNION as
  select from table1 { cast(field as abap.char(10)) as f1 }
  union
  select from table2 { cast(field as abap.char(10)) as f1 }

Error: Association Target Not Found

Problem

Association references non-existent entity.

Error Message:

"The CDS entity 'TARGET_VIEW' does not exist"

Solution

1. Verify target view name spelling
2. Ensure target view is activated
3. Check target is in accessible package

-- Correct entity name
association [0..1] to I_BUSINESSPARTNER as _Partner on ...

-- NOT: I_BusinessPartner (case matters in some contexts)

Error: Annotation Syntax Error

Problem

Invalid annotation syntax.

Common Issues

Missing Colon

-- Wrong
@AccessControl.authorizationCheck #NOT_REQUIRED

-- Correct
@AccessControl.authorizationCheck: #NOT_REQUIRED

Invalid Value

-- Wrong
@AccessControl.authorizationCheck: 'NOT_REQUIRED'

-- Correct (use # for enum)
@AccessControl.authorizationCheck: #NOT_REQUIRED

Missing Brackets

-- Wrong
@UI.lineItem: position: 10

-- Correct
@UI.lineItem: [{ position: 10 }]

Error: DCL Compilation Failed

Problem

Access control definition has errors.

Common Issues

1. Wrong View Name in DCL

-- DCL references non-existent view
define role Z_WRONG_DCL {
  grant select on Z_NONEXISTENT_VIEW
    where ...
}

-- Solution: Verify view name
define role Z_CORRECT_DCL {
  grant select on Z_EXISTING_VIEW
    where ...
}

2. Invalid Authorization Object

-- Authorization object doesn't exist
where (bukrs) = aspect pfcg_auth(INVALID_OBJECT, BUKRS, ACTVT = '03');

-- Solution: Verify in SU21
where (bukrs) = aspect pfcg_auth(F_BKPF_BUK, BUKRS, ACTVT = '03');

3. Field Not in View

-- Field 'xyz' not in protected view
where (xyz) = aspect pfcg_auth(...)

-- Solution: Use field that exists in view
where (bukrs) = aspect pfcg_auth(...)

Warning: No Access Control

Problem

View has @AccessControl.authorizationCheck: #CHECK but no DCL.

Warning Message:

"No access control exists for entity 'Z_VIEW'"

Solutions

Option 1: Create DCL

@MappingRole: true
define role Z_VIEW_DCL {
  grant select on Z_VIEW
    where ...
}

Option 2: Disable Check

@AccessControl.authorizationCheck: #NOT_REQUIRED
define view Z_VIEW as select from ...

Performance Issues

Symptom: Slow Query Execution

Causes and Solutions

1. Missing Index on Filter Fields

-- Slow: Filtering on non-indexed field
where customer_name like '%SAP%'

-- Better: Filter on indexed key field
where customer_id = 'CUST001'

2. Unnecessary Joins via Associations

-- Triggers join even if not needed
{
  _Customer.name1  -- Always joins
}

-- Better: Expose association only
{
  _Customer  -- Join-on-demand
}

3. Complex CASE in WHERE

-- Slow: Complex logic in WHERE
where case when type = 'A' then field1 else field2 end = 'X'

-- Better: Restructure query or use UNION

4. Wrong Cardinality

-- Slow: TO MANY when actually TO ONE
association [0..*] to customer as _Cust on ...

-- Better: Correct cardinality enables optimization
association [0..1] to customer as _Cust on ...

Runtime Errors

CX_SY_OPEN_SQL_DB

Problem: Database error during CDS access.

Common Causes:

• Invalid data conversion
• Division by zero
• Buffer overflow

Solution: Add defensive logic:

case
  when divisor = 0 then 0
  else dividend / divisor
end as SafeDivision

CX_ABAP_INVALID_VALUE

Problem: Invalid value in CDS calculation.

Solution: Validate before calculation:

case
  when dats_is_valid(date_field) = 1
    then dats_add_days(date_field, 7)
  else '00000000'
end as SafeDate

Debugging Tips

1. Data Preview in ADT

Right-click view → Open With → Data Preview

2. Generated SQL

Right-click view → Show SQL CREATE Statement

3. Check Dependencies

Right-click view → Get Where-Used List

4. Annotation Analysis

DATA: lo_svc TYPE REF TO cl_dd_ddl_annotation_service.
cl_dd_ddl_annotation_service=>create(
  EXPORTING iv_cds_view = 'Z_VIEW'
  RECEIVING ro_service = lo_svc
).
DATA(lt_annos) = lo_svc->get_annos( ).

5. Authorization Trace

Transaction ST01 → Authorization check trace

Useful Transactions

Common Mistakes Checklist

• SQL view name ≤ 16 characters
• Unique SQL view name
• CURR/QUAN fields have references
• Association cardinality matches data
• DCL exists for sensitive views
• Field aliases are unique
• CASE branches return same type
• GROUP BY includes all non-aggregated fields

Documentation Links

• SAP Help - CDS Messages: https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/abencds_messages.html
• SAP Community - CDS Troubleshooting: https://community.sap.com/t5/tag/CDS%20Views/tg-p

Last Updated: 2025-11-23