Solution : https://service.sap.com/sap/support/notes/1433872 (SAP Service marketplace login required)
Summary : 
      This SAP Note addresses a performance issue in the Product Safety component, specifically within the Specification management module where processing times are excessively high for specifications with numerous value assignments incorporating phase characteristic values. Determined to be caused by a program error, resolutions are provided in designated Support Packages as listed in the "Reference to Support Packages" section. Users may also apply the attached correction instructions directly. Relevant for systems running EHS2005SP17PS, EHS62SP07PS, EHS63SP06PS, or EHS64SP05PS.
Key words : 
specification managementthe system takes, terms ehs2005sp17psehs62sp07psehs63sp06psehs64sp05ps reason, prerequisites reasonthis problem, attached correction instructions, correction instructions, symptom component, product safetymodule, large number, characteristic values, program error
Related Notes : 
       
| 1451136 | Performance improvements (Compliance Workbench; Checks) | 
| 1428188 | Runtime for input help for characteristic value is too long | 
| 1247216 | Specification BAPI/API and inheritance: Important notes | 
| 1111161 | FAQs when you are working with specification BAPIs | 
| 1074977 | Example programs for specification BAPIs | 
| 1071008 | Sample code for AT_SAVE_CHECK of BAdI EHSS_SPEC_CHECKS | 
| 1037369 | |
| 1010169 | Value check for phrase-related characteristics is too slow | 
| 968778 | BAdI EHSS_SPEC_CHECKS and enhancements C1F20001, C1F20100 | 
| 952426 | Reading char values for class type 100 takes too long | 
| 945263 | Runtime too long when high number of characterisitcs is read | 
| 944909 | |
| 862751 | SAP enhancement C1070001 | 
| 850601 | |
| 823422 | |
| 800918 | Rules for API programming with SAPLC1F2, SAPLC1F5 | 
| 425030 | Accelerating reading of charactrstc values in spec. read API | 
| 411416 | Change of value assignment instances too slow |