How To Fix E7064 - Entry in "ND" field (device alloc. not poss.) changed in billing period

SAP Error Message - Details

• Message type: E = Error

• Message class: E7 - IS-U master data

• Message number: 064

• Message text: Entry in "ND" field (device alloc. not poss.) changed in billing period

What causes this issue?

You cannot bill an installation if the <LS>ND</> indicator (device
allocation is not possible) changes within a billing period.
In the current installation, the value was changed after the start of
the current billing period.

System Response

You cannot save the installation with its current status.

How to fix this error?

Correct the entry in the <LS>ND</> indicator (device allocation is not
possible) to the same value for all modifiable time slices.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E7064 - Entry in "ND" field (device alloc. not poss.) changed in billing period ?

  The SAP error message E7064, which states "Entry in 'ND' field (device allocation not possible) changed in billing period," typically occurs in the context of device management and billing processes within SAP IS-U (Industry Solution for Utilities). This error indicates that there is an inconsistency or conflict regarding the allocation of a device (like a meter) during a billing period.
  Cause:
  
  Device Allocation Changes: The error usually arises when there are changes made to the device allocation (ND field) during an active billing period. This could happen if a device is reallocated, replaced, or if there are changes in the master data that affect the billing process.
  Billing Period Restrictions: SAP has certain restrictions in place to prevent changes to device allocations during an ongoing billing period to ensure data integrity and accurate billing.
  Data Inconsistencies: There may be inconsistencies in the data related to the device, such as incorrect or missing entries in the master data or billing documents.
  
  Solution:
  
  Review Changes: Check the changes made to the device allocation during the billing period. If changes are necessary, consider whether they can be postponed until after the billing period is closed.
  Close Billing Period: If possible, close the current billing period to allow for changes to be made. Once the billing period is closed, you can make the necessary adjustments to the device allocation.
  Correct Master Data: Ensure that the master data for the device is correct and consistent. This includes checking the device's allocation history and ensuring that there are no conflicting entries.
  Consult Documentation: Refer to SAP documentation or consult with your SAP support team for specific guidelines on handling device allocations and billing periods.
  Use Transaction Codes: Utilize relevant transaction codes (like EL31 for device management) to review and correct device allocations.
  
  Related Information:
  
  SAP Notes: Check for any SAP Notes related to this error message for specific patches or updates that may address the issue.
  Transaction Codes: Familiarize yourself with transaction codes related to device management and billing, such as EL31, EL30, and FBL5N.
  User Roles: Ensure that users have the appropriate roles and authorizations to make changes to device allocations and billing data.
  Testing: After making changes, conduct thorough testing to ensure that the billing process runs smoothly without further errors.
  
  If the issue persists after following these steps, it may be beneficial to engage with SAP support for further assistance.